I'll call you as soon as my father (a) return (b) returns (c) returned​

It's to know your purpose before you read something because a purpose can:

Use morphology and syntax to make grammatical sense of the following sentence (mark all that the ova of all mammals except the monotremes undergo holoblastic segmentation. the -s inflection indicates that monotremes is a plural noun. the suffix -ic indicates that holoblastic is an adjective. the suffix -ation in the word segmentation is a noun-forming suffix denoting a process. the -s inflection indicates that monotremes is a possessive noun.

Connie has 4 lists about trees in her notes. which of her lists gives names of products that we can get from trees?