Answer:
Well.. When I am reading the answer choices, I feel like all of the answer choices are incorrect in the sentence
In psychology problem solving has been defined as a high level cognitive process. It is about finding an optimal solution for solving both simple problems and complex problems. The thought also plays a very important role in the cognitive process, therefore in the resolution of problems as well.
Shouldn't it be "I want to go, but my mom won't let me."?