Choose the correct punctuation for the sentence below. Gems are not always ready to use, in fact some gems look rough and dirty in their natural state.

1) No change

2) ; in fact ,

3) , in fact ,

4) ; in fact

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.