I think it’s D!
In a sentence using passive voice, the subject is acted upon; he or she receives the action expressed by the verb. The agent performing the action may appear in a "by the..." phrase or may be omitted. The dog is acting upon the sentence subject (the boy), meaning it uses the passive voice.
D the answer is d because it shows the NASA worker needs to make sure they have enough time and etc.
The answer for this question is (B) which is she hoped the line for the roller coaster would be shorter in the afternoon. Hope this help.
The answer is a. doing research and organizing your ideas. trust me i got it right . good luck! n.n
