In which sentence is the underlined phrase an adverb prepositional phrase?

The biggest industry of the Cook Islands is tourism, which brings in more revenue than exporting fish and fruit.

The Cook Islands is a group of 15 small volcanic islands.

The Cook Islands stretch over 800 miles.

An airport on Rarotonga is a destination for tourists to the Cook Islands.

Excerpt from the trip of a lifetime elizabeth mohn 3 a little more than a week ago, my mother and father started packing our suitcases to prepare for our trip. my entire family woke up early sunday morning, packed the car, and began our expedition to niagara falls. when we reached the american-canadian border, i was excited to enter a foreign country for the first time. the third paragraph is mainly about a) traveling to niagara falls b) leaving the hotel. c) seeing the falls. d) returning home.