When you are reviewing the conventions in an essay, what are you looking for?
spelling, grammar, and usage
transitions and organization
unnecessary sentences
wording and variety of language

Improper grammar is one of the easiest ways to get a bad grade on any writing project. So based on the options available, I'd say A. Spelling, grammar, and usage is the best answer.

the consumer demand because the members have to be aware if people are going to buy what they want to sell in this case either energy drinks or a car wash.

answer; collective security;