There is no diagram for illustration but I will explain each option using assumptions
Answer and explanation:
If Emily divides -15 by 5, the result would be
-15/5=-3
The arrows should point in the negative direction: yes we have a negative result hence -3 should be on the negative side of the number line
The small arrows should end in the same place as the large one: this should be known from the diagram but I assume we are talking about decimal numbers in between whole numbers on the number line. The small arrows for decimals and the large ones for the whole numbers. Here the result is -3 therefore we should have a large arrow pointing to it, and not a small arrow
The arrows should end on negative 15: our result is -3 or negative 3 therefore the arrow should end on negative 3 and not negative 15.
The arrows should start at zero: zero is like the boundary between negative and non negative numbers. Arrows should count from 0 to negative or non negative direction on the number line
There should be 5 small arrows: there should be large arrows and less than 5 counts as our result is negative 3 and not 5