Which of the Following Is the Most Likely Reason That

question 16

Multiple Choice

Which of the following is the most likely reason that we need to develop a new flu vaccine every year?

• A) The flu virus evolves due to negative selection.
• B) The flu virus evolves due to positive selection.
• C) The vaccine evolves due to negative selection.
• D) Humans evolve from year to year.
• E) Our immune system degrades over time.

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Definitions:

Retail Trade

Retail trade refers to the sale of goods and services to consumers for personal or household consumption through various channels.

Compressed Work Schedules

Work arrangements allowing employees to work a full-time job's hours in fewer days than a traditional schedule.

Construction Jobs

Positions related to the process of building, maintaining, and repairing structures, including roles like carpenters, electricians, and project managers.

Work Schedules

The arranged hours set for employees to perform their job duties, varying widely across different occupations, industries, and companies.