Which sentence uses dashes correctly?
a.
i intend to—paint that bookcase tomorrow— me remove all the books.
b.
we will use the same color for the bookcase—light green—that we used on the door and window frames.
c.
yard work—for example, raking leaves and planting shrubs—fills many of our autumn weekends.
d.
open the windows—to let the breeze in—and the paint will dry fast.

the legal limit for the drivers who can drive after consuming any amount of alcohol is 21 years.

explanation:

on november 1, 1996, a "zero tolerance law" was put into effect in the new york state.

according to this zero tolerance law, for people under the age of 21 years, it was illegal to purchase and possess alcohol or to drive after consuming any amount of it.

also, the alcohol involvement rate for the drivers under the age of 21 was roughly twice that of elderly drivers.

the group received an extra pound of butter for christmas.

the annex was delighted to hear that we'll all be receiving an extra quarter pound of butter for christmas.

this is the sentence that best shows that fast food restaurants are designed for using unskilled labor. 

1. c. zone of saturation, water table, zone of aeration

2. c. condensation

3. b.   conservation and condensation

4. c. groundwater dips below the water table in an artesian well

5. d. oceans

6. c. geyser

7. d. groundwater

8. b. 70%

9. d. transpiration

10. c.   desalination