Question

coquina is a rock made of small pieces of broken shells. ocean waves break seashells into smaller pieces. over time, these pieces are moved and deposited. when they stick together, they form coquina. coquina is most likely a(n) ________ rock. choose one option a igneous b sedimentary c metamorphic

Explanation:

Sedimentary rocks form from the accumulation and cementation of sediment (like broken shells in this case). Igneous rocks form from cooled magma/lava, and metamorphic rocks form from existing rocks under heat/pressure. Since coquina forms from deposited shell pieces sticking together, it fits sedimentary rock formation.

Answer:

B. sedimentary