Answer:
a. I enjoy cooking with a crockpot; minimal effort is required.
b. I enjoy cooking with a crockpot; minimal effort is required.
c. I enjoy cooking with the crockpot, because minimum effort is required
Explanation:
The semicolon is used to link or join two independent clauses that are closely related (in words) in one single sentence.
The comma has its common function as separating independent clauses when they are joined by a (subordinate) conjunction such as 'because'.
