Sam the Goldfish "One of the most important things about having a goldfish is making sure they have clean water," John's mom explained, as they observed Sam, John's new goldfish, swimming around the bowl. "That means we have to change some of his water every week."
John looked up at his mom, a confused look on his face. "Why would we change only some of his water?" he asked.
"If you change all the water at once, it may shock the fish, but changing some of the water allows the fish to get used to the new water," his mom explained.
"I understand, now," John replied. "Will you help me change his water, so I make sure I do it correctly?"
"Of course, I will," his mother said. "But first, we need to find a good spot for Sam's bowl."
"I was thinking right next to my bed," John said, and smiled as he watched Sam swim around his bowl.

3
Which is the best summary of the passage?
A.
John and his mother change the water in his goldfish's bowl. He learns that he only needs to change some of the water. His goldfish is happy he has new water.
B.
John's goldfish needs the water in his bowl changed and his mother explains why that is important. He decides he will change the water at another time.
C.
John is excited to get a new goldfish, and he names his goldfish Sam. John then decides that Sam's bowl should be next to his bed so he can watch him swim.
D.
John has a new goldfish, and his mother explains the process of changing the water. She offers to help him. He decides to place the goldfish by his bed.