The correct answer among all the other choices is a. formality. This is not something to consider when revising for clarity. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.
Because it is unexplianable
Answer:
if we sell our house
Explanation:
Adverb clause is a dependent clause which functions as an adverb, i.e. it modifies an adjective, a verb, or another adverb.
There are different types of adverb clauses such as adverb clause of time, cause, condition, or manner.
This sentence includes adverb clause of condition that is if we sell our house.
Http://horror.wikia.com/wiki/List_of_deaths_in_Child's_Play_series
This might help!
A was the correct answer, hope this help :3