Contrary to popular belief, parents should be calm and try to help out.
Answer:
Explanation: The talk test is a simply way to measure relative intensity. In general, If you're doing moderate- intensity activity, you can talk but not sing during the activity.
So nothing goes wrong in he process.
I think (C):600
Explained: other sources say there is about 650 but if you count the muscles within a complex muscle then about 840
