Read the following line from the text: "We can't do that," Kenniston answered. "You know we've got to get back to that asteroid within two weeks. We've got to get a ship here." What can be inferred about Kenniston from this line.

He does not have time to look elsewhere for a ship is the correct answer.

Explanation:

First of all, the narrator sets a short period of time as a deadline when he says within two weeks, which suggests a sense of urgency. The modal verb have got to also shows that the action is mandatory or necessary, increasing this sense of urgency that limits time to look for a ship in any other place.