Final answer:
Leo submitted his biology coursework on 24/03/2017, which is 14 days or two weeks before the deadline of 07/04/2017.
Step-by-step explanation:
To determine when Leo submitted his biology coursework, we need to calculate the date that is two weeks before the given deadline of 07/04/2017. Two weeks is equivalent to 14 days. Therefore, we will subtract 14 days from the deadline date to find the submission date.
Using a calendar, we start from the deadline date:
- 07/04/2017
- Subtract 14 days
By counting back 14 days, we find that the submission date would be 24/03/2017.