Select all that apply. a participle may be used as a(n): linking verb object of a preposition predicate nominative appositive adjective complement subject indirect object

Participles can be classified in past and present; for example:  

With regular verbs such as help:

Present Participle: Helping

Past Participle: Helped

With irregular verbs such as bring:

Present participle: Bringing

Past participle: Brought  

Then, option 5 (Adjective complement) is not correct because participles can be used as adjectives for example in this sentence:

The walking men  

But the function of the participle walking would be pre-modifier of the noun men, not adjective complement.  

The correct options are object of a preposition (2), subject (6) and indirect object (7) and the participles in these cases are used as noun. Whenever a present participle is functioning as a noun, it is called gerund.  For example:

Marcus decided to shut up instead of criticizing his friend. (Object of a preposition)

Running exhausts John (Subject)

We gave bungee jumping a chance (Indirect object)

cassius, casca, and their allies plant false documents to manipulate brutus to join their cause to remove caesar. after doing so, they visit brutus at night in his home to persuade him of their views. there they plan caesar's death. brutus is troubled but refuses to confide in his devoted wife, portia. on 15 march, caesar's wife, calpurnia, urges him not to go to the senate. she has had visionary dreams and fears the portents of the overnight storms.