Final Answer:
The correct answer is: a) 7
Step-by-step explanation:
To find the number of days in half a fortnight, we first need to understand what a fortnight is. A fortnight is a period of two weeks, and since one week is standardly 7 days, a fortnight is 14 days long.
Knowing that, to find half a fortnight, we take the total number of days in a fortnight and divide it by 2.
Calculation:
14 days (1 fortnight) ÷ 2 = 7 days
Therefore, half a fortnight is equal to 7 days.