3) Select whether the sentence below is written using an appropriate conjunctive adverb. Sylvester had saved a seat but Carlos was already seated. false true

While the sentence in itself is correct but it does not use a conjunctive adverb. False.

Explanation:

Conjunctive adverbs like However, therefore etc are used to connect two independent clauses  but they do not join or merge them into the same sentence.

There must always always be a semicolon before and comma after a conjunctive adverb.

Here the sentences are simply joined with a but and makes complete grammatical sense so any other word is not needed to complicate the sentence.

im not sure about this one

one of the central themes of edward abbey's work has been his staunch opposition to the glen canyon dam on the colorado river that created lake powell, destroying stunning scenery and wildlife habitat, endangering many rare species of fish and animals, and also irreparably destroying many important archaeological sites which provided information about the early inhabitants of the united states.