Which answer correctly identifies the underlined words in the sentence?

To travel to the moon would be a great adventure.

Question

Which answer correctly identifies the underlined words in the sentence? 

To travel to the moon would be a great adventure.

anonymous · Answer

where are the answers and the underlined words?

wwhitlock · Answer

To travel: infinitive, functioning as a nominative: The subject of the sentence.
to: preposition
the: article modifying moon
moon: noun, object of the preposition
would: modal verb, past tense of will
be: verb
would be: verb phrase
a: article modifying adventure
great: adjective
adventure: noun, functions as the direct object of the sentence.

anonymous · Answer

Well done. CAPS rather than underlining work here.