Nicolas plays two rounds of golf. In the first round, he scores 3 under par, and he scores 3 over par for the second round. Are these opposite quantities whose sum is 0? Respond 1 if these quantities are opposites. Respond 2 if these quantities are not opposites.

1

To determine if the quantities are opposites, we need to check if the second round's score is the negation (opposite) of the first round's score.

The first round's score is 3 under par, which means it is -3.
The second round's score is 3 over par, which means it is +3.

Since -3 and +3 are not negations of each other and their sum is not equal to 0, these quantities are not opposites. So, the correct response is 2.