Title: Effort Wasted. Sentence 1: John went to the library. Sentence 2: He worked on an assignment using the computer. Sentence 3: All of his data was saved on a flash drive. Sentence 4: He forgot to take his flash drive with him when he left. Choices: a. However, when she opened the box, her tablet was shattered. b. As a result, he had to redo his work.
b