Read the following paragraph and answer the question. Give ONLY the answer, no other words or explanation.

For example:

Answer: <most likely answer, as short as possible>.

Paragraph: He owed her that much right ? He 'd gotten a little upset though when she said she was going alone . He was n't having it . He was going with or she was n't going at all . So they both left that night to drive to the lab to save the kid .

Question: Why did they drive to the lab ?
To retain a life .
To save the kid.