Directions: The given sentence has been broken into four parts. The error, if any, will be in one part of the sentence. Select the option which contains the error-less combination. If all are correct, mark Option 5 as your answer.

Because their bodies are warmer(A)/ than the surrounding air, heat gradually(B)/ radiates outward over time, moving form a (C)/ warmer material to a colder one. (D)/ No error (E)