How does intrusive and extrusive igneous rocks differ? Select two. A. gneous rocks that form under Earth’s surface and have large mineral grains because they form from magma that cools slowly.

B. Magma cooling under the surface of Earth, crystallizing to form rock.

C. Extrusive igneous rocks have small mineral grains or no grains at all because they form from lava that cools quickly.

D. Extrusive igneous rocks have large mineral grains or no grains at all because they form from lava that cools quickly.
Help me last one

Which is the best conclusion that can be drawn regarding the status of african-americans in the south in the late 1800s? a) african-americans made tremendous political, social, and economic advancements during the reconstruction era. b) passage of the 13th, 14th, and 15th amendments to the u.s. constitution guaranteed equal status and rights for all african-americans. c) the reconstruction policies enacted by the federal government were highly effective in african-american citizens transition to life after slavery. d) although african-americans had equal rights under federal law they were still economically, politically, and socially inferior to whites in the south during the reconstruction era.