Answer: Option (a) is the correct answer.
Step-by-step explanation:
Work done is related to force as force times displacement.
Mathematically, W = F × d
where W = work
F = force
d = displacement
Therefore, when Melissa carried two bags at a time then she is applying twice the force she was applying earlier. Hence, she have to apply half the force twice the distance.
Thus, we can conclude that no; she would have to use half the force over twice the distance.