The correct answer would be C. THis is because if it is written as (it's) it is a contraction for (it is).
I thinks it’s B hope it helps have a nice dayyy
Answer: Americans should follow the example set by the crew.
Explanation:
Based on this excerpt, President Reagan most likely believed that Americans should follow the example set by the crew.
This can be deduced when President Reegan stated that the Challenger crew was pulling us into the future, and we'll continue to follow them. This shows that the example set by the Crew should be followed.
