Item 19 Which word is described by this sentence?

These rocks form in volcanoes and wherever magma pushes through the crust.

magma chamber

shield

igneous

metamorphic

president reagan was a good presidant and should be presidant if he was still alive

explanation:

bro these r easy u may have to do them urself bro. lol jk the answer is two for nimber one, and for question number two sahel boi xd have fun get rekt m8

anyone me i need

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."