Help the stranded astronaut finish her optimistic transmission to Earth by choosing the correct option.

"Don't worry about me! I still have _____ oxygen tanks left, which gives you plenty of time to send a rescue ship."

The correct answer is a few.

"Oxygen tanks" is a countable plural noun, so we need few or a few. Because the astronaut is optimistic and has enough tanks to survive until rescue, we use a few (which has a positive meaning: "some"). If she said few, it would mean she was almost completely out of air!