Adverbial:
Marla looked up and gazed at the night sky
The birds with the red beaks were darting in and out of the water.
Adjectival:
She thought about her exiting summer and wondered if her new friends would keep in touch with her.
She stood up and walked to the sea.
To initiate something is to start something, so my guess would be Answer C.
I'm not completely sure that C is the correct answer, but it is the first event that happens in the story. It is also the event that causes the rest of the events.
This question was asked a while ago, so it might already have answers, but just in case. :)
Have a great day/night, stay hydrated, get the proper amount of sleep for you, and eat healthy foods.
I fell down the stairs and no one was home to help me up