Question

which of the following is the context clue for the word \epidemic\? * 1 point
○ due to controversies regarding the dengvaxia vaccine
○ many parents opted out of immunization
○ led to a measles epidemic in the philippines

Explanation:

To find the context clue for "epidemic", we analyze the options. An epidemic (widespread disease) can result from low immunization rates. If many parents opt out of immunization, it reduces population immunity, making an epidemic (like measles) more likely. The other options: A is about a specific epidemic event, not a clue for the word; C is about Dengvaxia controversies, not directly related to the cause of an epidemic in the context of the clue for "epidemic". So the action of parents opting out of immunization is the context clue as it explains how an epidemic could occur.

Answer:

B. many parents opted out of immunization