A Choose the correct sentence.
Martha wondered if the clouds meant it would rain, or snow but went running anyway.
b Martha wondered if the clouds meant it would rain, or snow, but went running anyway.
Martha wondered if the clouds meant it would rain or snow but went running anyway.
d Martha wondered if the clouds meant it would rain or snow, but went running anyway.
с

option (d)

Explanation:

in this sentence, we'll use a comma, only after snow... :)

a (Martha wonderd if the clouds meant it would rain, or snow but went anyway

Explanation:

the best option is D. It is a non restrictive relative clause.

Explanation: Nonrestrictive clauses should be set off by commas. For example, My uncle, who is a hard working mechanic, works a lot every Sunday.