"That she made" is the adjective clause.
"Suggestions" is the words it modifies.
Adjective clauses are groups of related words that contain a subject and a verb and modify a noun. Adjective clauses are dependant clauses.
In this example the word "suggestions" is the noun that is being modified by the adjective clause.
Whether you can or can’t, do it. I don’t agree with this because it could potentially break the laws of physics.
Deception often occurs when humans are in situations in which they face adversity or there is potential to improve their way of life. (this is my thesis for twelfth night. it's not amazing but it's refined and clear)
Tough Fran and I worked together, my science teacher gave Fran a better than he gave me.
This is a hard one and I can see why you decided to post it here. B is most definitely wrong but the other three are all neck and neck. There are both even pros and cons of A and C but I think it would be more reasonable to adopt a general routine. So I think the answer would be C.