Correct the sentence below if necessary.
straining and out of breath, doing the exercises was very difficult.

This sentence is correct.

Explanation:

There is no need for correction, because the comma is already separating the two independent clauses, there's correct capitalization, and correct punctuation.

the service industry in the united states grew in the late 1800s. what was one effect of that growth?

the number of people with jobs in factories as unskilled workers decreased.

the number of people with jobs in factories as unskilled workers increased.

the middle class grew as people took jobs as clerks, lawyers, and teachers.

the middle class shrank as people left jobs as clerks, lawyers, and teachers.

idk tbh because i'm just getting points.