Ais a word or group of words which completes the predicate of a sentence. verbal gerund modifier complement

Why is it important to include a descriptive subject heading? it in sorting the topics. it the recipient see its importance. e-mail programs won’t allow e-mail to be sent without it. it keeps junk e-mail separate from important e-mail.

Which statement describes how connotationis used in this passage

The proof spreading culture traits from society to another