Respuesta :

Answer:

b

Explanation:

A fossil index is a plant or animal that is preserved in the clock and records the earth's geologic history.

  • It has the character of the particle span of time and the geologic environment. The index fossil must be distinct and easily recognized.
  • Hence the option D is correct. Fossil B is the same age as the index fossil.

Learn more about the depths at which an index fossil and three others.

brainly.com/question/14988327.

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