Parallel structure should be used when you connect clauses with a coordinating conjunction such as: for, and, nor, or, but, so, or yet.
Some examples of this include:
Correct: Every morning, we make our bed, eat breakfast and feed the dog.
Incorrect: Every morning, we make our bed, eating breakfast and feed the dog.
Answer:
Switzerland, Sweden and Norway
Explanation:
I think the answer is C but i could be wrong
The answer would probably be C