Why would you expect the crystals in an intrusive rock to be larger than the crystals in an
extrusive rock?
a. the crystals in intrusive and extrusive
rocks are generally the same size.
b. intrusive rocks cool more rapidly, which
produces larger crystals.
c. intrusive rocks cool more slowly, which
produces larger crystals.
d. the chemical composition of intrusive
rocks produces large crystals.

C. Intrusive rocks cool more slowly, which produces larger crystals

Explanation:

Intrusive rocks are igneous rocks that form beneath the surface. Unlike extrusive rocks (rocks that form above the surface), intrusive rocks cool down more slowly, so this allows crystals more time to grow before they completely cool down and solidify.

i believe the correct answer from the choices listed above is the first option. the scientists need to look at the   validity of data, claims, hypotheses, and observations before  developing an argument. they base their arguments on facts that are present and they make sure they have proofs. 

explanation: