The man has to be in the park if the children he is making figures for are in the park.
This justifies what answer for what question? Q & A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Premise: "A man making balloon figures for children in a park."
Hypothesis: "A man in a park."
Do we know that the hypothesis entailed by the premise?
yes