What is the noun use in sentence she was able to get past muddy road by driving carefully?

The noun in the sentence "She was able to get past the muddy road by driving carefully" is "road".

Here's why:

* "Road" is the object of the preposition "past". Prepositions often have a noun phrase as their object.

* "Muddy" is an adjective describing the noun "road".

* "She" is the subject of the sentence.

* "Driving carefully" is a gerund phrase acting as an adverb modifying the verb "get".