Question

chewing gum can improve our alertness and lower our stress level. which piece of evidence better supports this claim? evidence a: 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. evidence b: 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. submit work it out not feeling ready yet? this can help:

Explanation:

Evidence B is a scientific study with a larger sample size (forty participants) that systematically compared two groups (gum - chewing and non - gum - chewing). It provides objective data on anxiety levels (a measure of stress) and alertness. Evidence A is an anecdote from a single student, which is subjective and based on personal belief rather than a controlled, measured study.

Answer:

B. Evidence B