They emphasized the importance of good maternal and child health care, including the administering of vaccines. what correction should be made to this sentence?

1.replace they with it
2.change emphasized to emphasize
3.change the spelling of importance to important
4.insert a comma after importance
5.remove the comma after care.

Make each of those substitutions and read the sentence aloud each time. Does any of them sound right?

#1 seems good to me, but only if you're talking about a report or article, instead of some people. Otherwise, the sentence is just fine.

The correction that should be made to this sentence is to change "emphasized" to "emphasize." This is because the sentence is referring to a singular entity, so the verb tense should also be singular. The correct sentence would be: "It emphasizes the importance of good maternal and child health care, including the administering of vaccines."