Write what he is thinking down. And find evidence to support his thoughts
I'll give you an example.
If two tectonic plates clide, more or less in a head-on collision, they form a convergent plate boundary.
Usually, one of the converging plates will move beneath the other, which is known as
subduction.
Deep trenches are often formed where tectonic plates are being subducted, and earthquakes are common.
B. I think thats right :/
Vaccine immunization is the correct answer I really hope that this helps and