Question

question 7 of 10
which animal adaptation happened before the others?
a. backbone and skull
b. reproduction on land
c. development of a coelom
d. lungs

Explanation:

The coelom is an internal body cavity that evolved early in animal evolution. Backbones, skulls, lungs, and land - based reproduction are more complex adaptations that came later in evolutionary history. The coelom provides a space for internal organs and is a fundamental feature in the evolution of many animal groups.

Answer:

C. Development of a coelom