29.Winter is the time of year______ the days are short and nights are long A.that B.when why?

29.Winter is the time of year______ the days are short and nights are long A.that B.when why?

A
29.Winter is the time of year______ the days are short and nights are long
Winter is the subject, is the predicate and year is the object
Days and nights are the subject and are the predicate