Final answer:
The correct word to complete the sentence is 'rapt,' which means completely engrossed or absorbed in something.
Step-by-step explanation:
He watched the ending of the movie with rapt attention. The correct choice here is 'b) rapt,' which means deeply engrossed or absorbed. This phrase is often used to describe someone who is so focused on something that they are oblivious to their surroundings.
The term 'rapt' has been used in various pieces of literature to describe a state of deep attention or fascination. Examples include characters who are engrossed in watching something with great interest or those who are caught up in moments of intense concentration.
The word that best fits the blank in the sentence is rapt. Rapt means completely absorbed or engrossed in something. In the context of watching the ending of a movie, it means being fully attentive and captivated by what is happening. For example, Sylvia watched the ending of the movie with rapt attention, completely immersed in the story and characters.
Therefore answer is b) rapt.