Which word best identifies the word the underlined phrase modifies?

with its trunk, an elephant gives an affectionate caress to its baby or mate.
1.caress
2.gives
3.trunk
4.elephant

What task did the surveyors do? a. they studied the landscape to determine the most direct route for building a road. b. they designed treadmills that lifted blocks of stone to where they were needed. c. they dug trenches and filled them with sand, concrete, and large blocks to form a road.