(+8) - (0) + (-3) + (-17)
O A-12
O B. 12
O C. 21
D.-21

Answer:
a) -12
Step-by-step explanation:
Subtract 8 from 0, 8 lefts.
Now add (-3) + (-17).
Now add 8 to (-20)
-12 lefts.
Answer: -12