Question

Where is desertification likely to occur

A. The East coast of America
B. Alaska
C. North Africa
D. Europe
And

Where is desertification NOT likely to occur
A. The east coast of America
B. California
C. North Africa
D. Central Asia

Answer 1

1.)C. North Africa

2.)D. Central Asia

Answer 2

So, the correct answer to your questions:

1. Where is desertification likely to occur? - it's likely to occur in North Africa

2. Where is desertification NOT likely to occur? - East Coast of America