What is the object of "take"?

The rescue capsule Fénix was designed by the Chilean Navy in collaboration with NASA to rescue the 33 miners trapped underground in Chile's San José copper mine. Painted in the red, white, and blue colors of Chile, the Fénix looked like a military missile. The device was nearly 3.95 meters high on the outside, and the inside was 1.9 meters high and about 51 centimeters across, which was just enough room for an adult male. When mobilized by the rescue team, the Fénix was equipped with an emergency oxygen supply. The bottom of the capsule held three tanks of air, which would provide enough air for one person to breathe for about 90 minutes. This amount of air was more than needed for the 15 to 20 minutes that the trip to the surface was expected to take. It also had a communication system so that the miners could speak to the surface while being lifted up.

Hi, I'm curious to know what is the object of "take" as in this sentence "This amount of ait was more than needed for the 15 to 20 minutes that the trip to the surface was expected to take".

1. This amount of air.

2. The 15 to 20 minutes.

3. Either 1 or 2 according to context.

I think the right answer is 1.