The Correct Answer and Explanation is:
The correct choice is B) adept.
Explanation
The word “adept” means to be very skilled or proficient at something. This choice is the most logical and precise fit for the sentence, which describes the impressive self-control abilities of cuttlefish. The text provides specific evidence to support the idea that cuttlefish are highly capable in this area. The sentence structure itself, with the word “surprisingly,” suggests that their ability is unexpectedly good, which aligns perfectly with being adept.
The supporting details in the passage clarify why “adept” is the correct answer. The study showed that the cuttlefish “routinely demonstrated restraint by delaying gratification.” This behavior, specifically “waiting for a favorite treat instead of instantly devouring a readily available meal,” is a classic example of sophisticated self-control. An animal that can successfully and consistently perform this action is not clumsy or awkward at it; rather, it is skilled. The word “adept” captures this sense of skill and proficiency.
The other options are incorrect because their meanings conflict with the context.
- A) Cumbersome means clumsy or awkward. This is the opposite of the behavior described. The cuttlefish were successful and routine in their restraint, not clumsy.
- C) Pliable means easily influenced or flexible. While mental flexibility might be related to self-control, “pliable” does not specifically mean skilled and is not the best fit.
- D) Whimsical means fanciful or unpredictable. This is also the opposite of the described behavior. The cuttlefish were not acting on a whim; they were exercising deliberate, predictable control to achieve a better reward. Their actions were calculated, not fanciful.
