Answer:
A. Yes, because by 2206, the radioactive element remaining in the area is less than 800 Bqs.
Step-by-step explanation:
Function for the amount of radioactivity:
The function for the amount of radioactivity, in t years after 1996, is given by:

Find f(220) to determine the amount of becqurels in 2206.

121.42 < 600, so the area will be safe, and the correct answer is given by option A.