Question

this map shows the age of the atlantic oceans oceanic crust. what does the curving band of red that goes from the top of the map to the bottom indicate?
a. the african continent is expanding.
b. the atlantic ocean is growing wider.
c. the seafloor is subducting under north america.
d. the seafloor is shrinking.

Explanation:

The red - colored band in the middle of the Atlantic Ocean represents a mid - ocean ridge. At mid - ocean ridges, new oceanic crust is formed through seafloor spreading. As new crust is created, the ocean basin widens. The African continent is not expanding in the context of this red band. There is no indication of subduction under North America from this red band, and the seafloor is not shrinking. Seafloor spreading at mid - ocean ridges causes the Atlantic Ocean to grow wider.

Answer:

B. The Atlantic Ocean is growing wider.