An urban region with more than 10 million inhabitants is called a(n)

what he said

Explanation:

d is the correct answer.

b is incorrect because it makes food by itself

c is incorrect because us humans don't know how to produce their own food using the sun like plants.

a is incorrect because consumers can depend on carnivores for eating food for consumers to eat the dead organism. same thing with omnivores.

my good sir, your answer here is "jvhrwekjhvbebebjb"

your welcome.