An effective a) uses anger to prove one idea is better than another b) uses emotions to prove one idea is better than another c) uses evidence to prove one idea is better than another d) uses opinions to prove one idea is better than another

the correct answer is:

this is an example of the writer telling through description rather than showing through dialogue.

sometimes writers like to explain explicitely what's happening instead of adding dialogues of the situations., which is the case in this passage,

the group received an extra pound of butter for christmas.

the annex was delighted to hear that we'll all be receiving an extra quarter pound of butter for christmas.