Question

Fix the sentence below

Answer 1

Answer:

A. trained doctors, physical therapists, and certified trainers

Explanation:

When you're listing three or more things, you should separate them with a comma. The last two words that make up the list should be connected by a conjunction, usually and or or. That conjunction should also be preceded by a comma. This type of comma is called an oxford comma, and its purpose is to make the sentence clear, unambiguous, and understandable.

Based on this information, we can conclude that the correct answer is option A.