B because u can't ask a question while u r reading if I get this right good or wrong I'm sorry
So here are the answers!
1. Left
2. had trekked
3. had visited
4. couldn't
5. bigger
The first three are in psst tense because the events did not happen just now, and could wouldn't make sense for number 4, and number 5, and biggest is not a word.
This is the summary that I wrote.
The answer would be for some specialized nonprofit agencies, the mission is to reach a particular group of people in need. Because it’s not really talking about the overview of the shoe agency.
