If abel and baker run faster than charlie and donna but slower than elaine,
then we know that-
a abel runs as fast as baker.
b donna runs faster than elaine.
c charlie runs faster than donna.
d elaine runs the fastest.
e abel and baker run the slowest.

D

Explanation:

Draw a simple diagram. (attached)

Based on the diagram, it can be certain that Elaine runs the fastest.

meme (meem)-an element of a culture or system of behavior that may be considered to be passed from one individual to another by nongenetic means, especially imitation. ( lol)