Select the conjunctive adverb

a. or
b. not only...but also
c. while
d. however
I chose d. However

Right.

Your choice of d. However is correct. "However" is a conjunctive adverb that is used to connect two independent clauses together, showing contrast or contradiction between the two clauses. It is commonly used to introduce a contrasting idea or to provide a transition between two different thoughts or ideas. For example, "I wanted to go to the party; however, I had too much work to do."

To identify a conjunctive adverb, it is helpful to look for words that join two independent clauses together while indicating a relationship between them, such as contrast, concession, cause-effect, or comparison. Some common conjunctive adverbs include "however," "therefore," "moreover," "thus," "consequently," and "nevertheless."

Other options you provided, such as a. "or," b. "not only...but also," and c. "while," are not conjunctive adverbs but rather different types of conjunctions. "Or" is a coordinating conjunction used to present alternatives, "not only...but also" is a correlative conjunction used to present two related ideas, and "while" is a subordinating conjunction used to introduce a subordinate clause in a complex sentence.