The correct answer is D) A source that's cited in another source.
The mode stands for the number in a series found the most.
In this series you have:
three 4s
two 17s
one 27
one 29
one 20
one 24
and one 34
The mode, or number most found, is 4.
I belive it’s counter claim or rebuttal
I need a picture to see what your talking about