. a group of students are studying rocks in their science class. they are trying to identify a rock that
has black and white foliated (wavy) stripes.
student a says the rock likely formed when black and white sediments collected together over time and
settled into layers. these layers later cemented together into a sedimentary rock.
student b says the rock is likely formed underground and slowly grew crystals, which is common for
igneous rocks
student c says the rock is likely an igneous rock, such as granite, because it is made of more than one
color.
student d says the rock probably transformed over time. heat and pressure deformed the layers and
turned them into foliated lines often found in metamorphic rocks.

which student do you believe has the most accurate explanation?
a. student a
b. student b
c. student c
d. student d