Answer: Each of the members on the panel was handed a copy of the 30-page proposal.
Explanation:
The pronoun each is an infinite pronoun as it does not refer to a specific person but still includes all of them. As it is a singular pronoun, it would need to be matched by a singular verb being was instead of were which is a plural verb.
Also, with numbers, it is a general rule that when the number is between one and ten it would be best to write it as a word. When the number is above 11 however, it would be best to write it as numerals. The correctly punctuated example is therefore the first one.
