Question

Which underlined gerund functions as the object of a preposition? The valley later became a center of /mining/ for borax. Because of the heat, frequent /resting/ is advised. When you visit, avoid /hiking/ in the midday sun. /Hiking/ is now Death Valley’s greatest tourist activity.

Answer 1

mining for borax

Step-by-step explanation:

Answer 2

The valley later became a center of mining for borax.

because Borax was the center valley.