Respuesta :

Answer:

B - between 100 and 500 million year old.

Explanation:

Because X is older than the 100 layer but younger than the 500 layer according to the position in the picture.

eukalim
B. It is between W and Y. Since we know that W is 100 million years old and Z is 500 million years old, although X is between W and Y, Z is under Y and 100-500 million years old is the most suitable answer.