Help the alien choose a new spaceship by selecting the grammatically correct word or phrase.

The X-9000 model is incredibly fast, but the Z-200 is definitely ______ for long trips across the galaxy.

The correct answer is more comfortable.

For long adjectives (usually three or more syllables, like com-fort-a-ble), we form the comparative by adding more before the adjective. We never add "-er" to the end of these long words, and we certainly don't use both!