What is the Gerund phrase in this sentence Fighting is like champagne. It goes to the heads of cowards as quickly as of heroes. Any fool can be be brave on a battlefield when it's brave or else be killed

Answer / Explanation

To properly answer this question, we need to first understand what a Gerund word or phrase is.

Gerund words or phases are words in form of a verb that ends with an -ing. These types of word function more as a noun rather than a verb. A gerund phrase consists of the gerund plus any other modifying words. To properly know how to identify a gerund word, we search  for a word that looks like a verb ending in –ing within a statement then try to replace the word with it.  If the replacement gives us  a good sentence, then we probably have found a gerund word.  Now referring back to the narrative of the question asked, the gerund words in the statement are:

Fighting is like champagne. The core gerund word here is fighting as discussed in the aforementioned explanation above.

caliban is prospero's slave in the shakespear's play "the tempest"

the sentence that avoid faulty coordination is:

culture, which is well represented in philadelphia, plays a major role including theatre, music, and the visual arts.  

faulty coordination occurs when the writer gives equal importance two different ideas (clauses) which in fact are not equivalent. in order to correct a misplaced clause or idea, the writer can place less important or emphatic ideas in a relative clause as in the previous sentence.