To define an appropriate domain for the problem, we need to consider the variable \( t \), which represents the number of days after Annabel returns from the market. Since Annabel bakes the banana bread 5 days after her return, \( t \) can take values from 0 (the day she returns) to 5 (the day she bakes the bread).
The appropriate domain for \( t \) is therefore:
\[ 0 \leq t \leq 5 \]
So the correct response is:
0 ≤ t ≤ 5