The third statement is correct.
Nick, who was our dorm advisor, and Joe, Nick's roommate, raised their concerns to the school residence office. They wanted to know why Dennis didn't have to share a room.
In the first statement, there are two subjects- Nick and Joe. However, "his" is used in the predicate referring only to one of the two subjects. This made the sentence incorrect. The same with the second statement. It used not only "his" in the first sentence, but it also used "he" in the second sentence referring to only one of the two subjects mentioned, instead of "they".
The Confederation Congress lacked key Powers it could not raise taxes or regulate trade. The Congress could not make States obey the laws it passed. 9 of 13 state delegations had to degree before Congress could act. The Articles could only be changed with the consent of all 13 state legislatures
The answer is 21 months.
At just a little short of 2 years, you can expect a normal and healthy toddler to utter their first multi-word sentence.
For female toddlers, it might be a bit earlier but generally, 21 months is the average time.
If a toddler speaks a bit later, e.g. more than 48 months, it is recommended to go to a pediatrician for a quick check up.
