Question

consider this claim: chewing gum can improve our alertness and lower our stress level. which piece of evidence better supports this claim? evidence a: in a study of forty participants, those who chewed gum while performing stressful tasks had lower levels of anxiety and higher levels of alertness than those not chewing gum. evidence b: during a class discussion, a student shared that he chewed gum throughout a recent chemistry test because he heard it would help him stay calm and alert. he believed that he did very well on the test as a result.

Explanation:

Evidence A is from a study with multiple participants, providing more objective and general - applicable data compared to Evidence B which is a single - student's self - reported anecdote.

Answer:

A. In a study of forty participants, those who chewed gum while performing stressful tasks had lower levels of anxiety and higher levels of alertness than those not chewing gum.