An igneous rock that has a glassy texture is? 1.) pumice
2.) obsidian
3.) all of the above
4.) scoria

Your answer is: B) Obsidian

Hope this helped : )

Explanation:

A) Pumice is not glassy

C) If Pumice is not glassy that means that it can't be all of the above.

D) Scoria is just like Pumice  

the answer is:

c. islam and christianity

explanation:

islam and christianity are widely practiced in africa. islam is practiced due to its spread from the middle east into africa, and christianity is practiced due to the colonization of africa by the british empire.