Question

use the text below to answer the question.
how can you tell if a rock is sedimentary? again, thinking about how rocks form can help you. look for particles, or sediment, in the rock—like sand, pebbles or shells—that might be stuck together. sedimentary rocks tend to be softer than the other rock types. they also are much more likely to contain fossils. some sedimentary rocks contain stripes due to the layers of sediment that form them. the red stone of sedona, arizona, are striped in this way. those rocks are sandstone, a sedimentary rock.
which of the following would be a clue that a rock is sedimentary?
choose one option
a no fossils or layers can be seen.
b there are small clear, hard crystals visible.
c the rock crumbles easily in your hand.
d there are ribbon-like bands of minerals.

Explanation:

The text states that sedimentary rocks tend to be softer than other rock types. Option C ("The rock crumbles easily in your hand") aligns with the characteristic of sedimentary rocks being softer. Option A is incorrect as the text says sedimentary rocks are likely to contain fossils. Option B (hard crystals) is more characteristic of igneous or metamorphic rocks. Option D (ribbon - like bands) is more related to metamorphic rocks.

Answer:

C. The rock crumbles easily in your hand.