Teacher:In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.
Teacher: Now, understand the problem? Solve this instance: Sentence: Because charges must have an unbroken path to follow, electric current cannot flow through a material unless it forms a closed loop. Question: Because charges must have an unbroken path to follow, electric current cannot flow through a material unless it forms what?
Student:
closed loop