Choose the correct words to fill in the blanks. The prize money was shared…

Correct sentence: "The prize money was shared among all the members of the football team."

First blank: The prize money is distributed across the team's members taken collectively as a single group. "Among all the members of the football team" is the most idiomatic collective-distribution phrasing, because the members are treated as one group rather than as separately named individuals. "By" would wrongly mark the members as the doers of the sharing rather than the recipients.

Second blank: To show that the members belong to the team, use the preposition "of" — "members of the football team" is the fixed, idiomatic phrase. "From" would wrongly imply origin or movement, and "in" is informal and unidiomatic here.

Therefore the correct pair is "among; of".