40. volcanoes are examples of igneous activity
a. underground
b. above ground

B

Explanation:

Volcanoes typically occur underground when they do. "Although most of the active volcanoes we see on land occur where plates collide, the greatest number of the Earth's volcanoes are hidden from view, occurring on the ocean floor along spreading ridges." (https://oceanservice.noaa.gov/facts/volcanoes.html)

Hello, the correct answer for this question is B. Above ground

Explanation:

Volcanoes are the way out for incandescent material that is formed in the center of the Earth.

d is the logical answer but im not a 100% sure