why would settlers choose to use oxen to pull wagons rather than mules?

A) mules were thought to be bad tempered
B) mules were not as fast as oxen
C) mules were prone to injury
D) mules would not forage off the land

3 answers

And your answer is?
If that's what your assigned reading says, it must be right.

I'd think oxen were better because they could pull heavier loads.
A) mules were thought to be bad tempered