I believe the correct answer would be him.It would make more sense than His knowing the combination to the lock came in handy. and Him <span>knowing the combination to the lock came in handy.
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"Creating fear in us" is a gerund verbal phrase. Option A is correct.
A gerund phrase always begin with a gerund,(an ing word), and may include other modifiers and/or objects. Gerund phrases always function as nouns, so they will be subjects, subject complements, or objects in the sentence. So, to put it simply, a gerund is a noun formed with a verb ending in ing. In this particular case the gerung in the sentence is the verb "creating;"(create+ing).
In Act 1, Cassius is trying to persuade Brutus against Caesar. This would make him a betrayer. It shows that Cassius is against Caesar in all ways possible. Especially when he saved Caesar and he acted like a little sick girl. Cassius's persuasion eventually wins over Brutus and that's why the outcome of Julius Caesar, was what it was.