What are two ways in which bays are thought to be formed

Bays are thought to be formed by plate tectonic activity and erosion of coastline.

Explanation:

A body of water irregularly surrounded by land is known as a bay. And it is quite different from a gulf.

A bay is formed this way:

• when there is an erosion of the coastline into a large body of water. E.g Guanabara Bay.

• in pre-historic era, during active plate tectonic activity where continents drifts together and as they rift apart, there is the fomation of many large bays. E.g Bengal Bay.

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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.