Which of the following characteristics are necessary for a fossil to be a good index fossil? (Choose all that apply) had a broad geographic distribution
easy to identify at the species level
an invertebrate
short-lived

A good index fossil is one with four characteristics: it is distinctive, widespread, abundant, and limited in geologic time. Because most fossil-bearing rocks formed in the ocean, the major index fossils are marine organisms.

Explanation:

your answer would be a, maximum exploitation of resources.