I am pretty sure it would be massive because it is an English question. If you are doing a multiple choice question you should see which one fits the best. If could also be positive impact.
The answer is B
Both sides include at the making it parallel
To snow.
Why? "It's beginning to snow." makes the most sense. "It's beginning snowing." doesn't make as much sense.
Im almost positive the answer to your question is someone's.