Most granite is made of the minerals quartz, feldspar, and mica. when granite weathers mechanically, what does it turn into?
a. feldspar, mica, and clay
b. quartz, feldspar, and mica
c. quartz, limestone, and clay
d. feldspar, clay, and limestone

When granite weathers mechanically, it turns into feldspar, mica, and clay

Option A

Explanation:

Chemical weathering is also popularly known as Mechanical weathering of granite starts when mild carbolic acid mixed with it. Initially, it alters the Feldspar in the hydrolysis process. Thus the reaction results in forming kaolinite, silica in solution and potassium ions as by-products.

Kaolinite is one of the clay mineral layered with silicate and silica by-products consist of mica. As time goes by the Feldspar cools down returning as the same particle in the sand. Moreover in warm regions, the weathering on feldspar forms a high amount of clay along with the red soils.

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."