Evaluating Truth of Natural Selection Statements

Steps:

• Identify statements I, II, III about natural selection (e.g., I: variation exists; II: traits acquired during life are inherited; III: better-adapted survive more).
• Assess I: True, as natural selection requires heritable variation in populations.
• Assess II: False, since Lamarckian inheritance is incorrect; only genetic traits pass on.
• Assess III: True, as differential survival/reproduction drives adaptation.
• Match to option B: I true, II false, III true.

Why B is correct:

• Aligns with Darwin's theory: selection acts on heritable traits, not acquired ones (core principle in "Origin of Species").

Why the others are wrong:

• A: Incorrectly marks II as true, ignoring genetic inheritance requirement.
• C: Falsely marks I as false, contradicting variation as selection's foundation.
• D: Falsely marks both I and II, misrepresenting core mechanisms.

Final answer: B