In this scenario, Annabel is interested in the growth of the fruit flies over a period of time from when she returns from the market until she bakes the banana bread. Since she bakes the banana bread 5 days after returning from the market, the appropriate domain for time (t) should reflect this time frame.
The correct choice would be:
0 ≤ t ≤ 5
This means that the number of fruit flies is being measured starting from the day she returns home (t = 0) up to the day she bakes the banana bread (t = 5).