John wants to invite around 78000 college students to a tournament. Which of the following sets of college student populations has a sum closest to 78000.

Set A has a college student population with the sum closest to 78,000.

Step-by-step explanation:

Step 1:

First, we need to determine the sums of college student populations.

Set 1;

Set 2;  

Set 3;

Set 4;

Now we determine the difference in populations between the given sets and 78,000.

Set 1;

Set 2;

Set 3;

Set 4;

Set 1 has the minimum difference of all the sets, so it is the answer.