Question

Which of the following can be inferred about anteaters from the behavioral experiment mentioned in the second paragraph?

• A. They are unable to distinguish between stimuli detected by their electroreceptors and stimuli detected by their tactile receptors.
• B. They are unable to distinguish between the electrical signals emanating from termite mounds and those emanating from ant nests.
• C. They can be trained to recognize consistently the presence of a particular stimulus.
• D. They are more efficient at detecting stimuli in a controlled environment than in a natural environment.

Answer 1

The correct option is C They can be trained to recognize consistently the presence of a particular stimulus.

The best answer is C. The passage states that anteaters were “successfully trained” by researchers “to distinguish between two troughs of water,” only one of which had an electrical field.
Choices A, B, D can be eliminated because they present hypotheses about anteater behavior that were not tested in the experiment and are not discussed in the passage.