Answer:
Outreach
Explanation:
The three options provided are types of people i.e "children", "elderly", and "homeless". So, the fourth element too should be a type of people. Hence, "Finances", and "Conservation" are eliminated.
Out of "Students" and "Outreach", "outreach" would be better option;
Firstly because, children (age), elderly (age) homeless (location), and then fourth too should be about location i.e. "Outreach"
Secondly, because "students" is a sort of occupation, children may also be students. So, "Students" does not fit well with the three provided options.
The correct answer to the given question above is the content of "What Exactly Are Green House Gases". The author in the story "An Inconvenient Truth" uses the content of "What Exactly Are Green House Gases" to emphasize how humans can improve the atmosphere.
The first one has the good punctuation;
Let"s play ball ; I'm up to bat first (a semicolon)
hope I helped !