Alliteration is the repetition of the same consonant sound in initial position in a series of words.
So, the correct answer here is B (Great is the Golden Cat who treads) as the sound "G" is repeated in the words "great" and "golden".
In answers A, C and D no consonant sound in initial position is repeated, so there is no example of alliteration.
A) mr.white doubts that the monkey's paw can really grant wishes.
It would be a) because Mr. White is in a way fighting with his mind.
It's more internal than the rest because:
b) is a man vs. man conflict
c) is also a man vs. man conflict
d) is a man vs. environment conflict
Hope I was able to help at least a little bit :)
The answer would be Plot!