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Shortcut used: Identify the hypothesis, changed variable, measured outcome, controls, and evidence before answering.
Solve in 3 steps:
- Identify the first relation/pattern.
- Apply the same rule to the missing part.
- Reject options that break the rule.
Common mistake: Do not pick a merely related option; it must match the exact pattern.
Question 4
Multiple Choice Question
Question
Experiment 1: A student tests whether salt concentration affects radish-seed germination. Four groups of 30 seeds receive equal volumes of solutions containing 0%, 1%, 2%, or 3% salt. All groups use the same seed source, containers, light, and temperature. After seven days, the student records the percentage of seeds that germinated.
Which change would most improve confidence that the results are reproducible?
Explanation
Correct Answer: D
ANSWER
Correct Answer: D
Method / Topic: Scientific Reasoning
Independent repetitions show whether the pattern occurs consistently rather than by chance.
Why this answer is correct
The correct option preserves the same pattern.
Short Explanation
Independent repetitions show whether the pattern occurs consistently rather than by chance.
Detailed Explanation
Question
Experiment 1: A student tests whether salt concentration affects radish-seed germination. Four groups of 30 seeds receive equal volumes of solutions containing 0%, 1%, 2%, or 3% salt. All groups use the same seed source, containers, light, and temperature. After seven days, the student records the percentage of seeds that germinated.
Which change would most improve confidence that the results are reproducible?
ANSWER
Correct Answer: D
Method / Topic: Scientific Reasoning
Independent repetitions show whether the pattern occurs consistently rather than by chance.
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Question 4
Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake
Learn + solve
Shortcut used, common trap, and the fastest solving route
Shortcut used: Identify the hypothesis, changed variable, measured outcome, controls, and evidence before answering.
Solve in 3 steps:
- Identify the first relation/pattern.
- Apply the same rule to the missing part.
- Reject options that break the rule.
Common mistake: Do not pick a merely related option; it must match the exact pattern.
Question
Experiment 1: A student tests whether salt concentration affects radish-seed germination. Four groups of 30 seeds receive equal volumes of solutions containing 0%, 1%, 2%, or 3% salt. All groups use the same seed source, containers, light, and temperature. After seven days, the student records the percentage of seeds that germinated. Which change would most improve confidence that the results are reproducible?
Explanation
Correct Answer: D
ANSWER
Correct Answer: D
Method / Topic: Scientific Reasoning
Independent repetitions show whether the pattern occurs consistently rather than by chance.
Why this answer is correct
The correct option preserves the same pattern.
Short Explanation
Independent repetitions show whether the pattern occurs consistently rather than by chance.
Detailed Explanation
Question
Experiment 1: A student tests whether salt concentration affects radish-seed germination. Four groups of 30 seeds receive equal volumes of solutions containing 0%, 1%, 2%, or 3% salt. All groups use the same seed source, containers, light, and temperature. After seven days, the student records the percentage of seeds that germinated.
Which change would most improve confidence that the results are reproducible?
ANSWER
Correct Answer: D
Method / Topic: Scientific Reasoning
Independent repetitions show whether the pattern occurs consistently rather than by chance.
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Concept tagged
Identify the hypothesis
changed variable
measured outcome
controls
and evidence before answering.
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