Which is the common ratio of this sequence? 1/256, 1/64, 1/16, 1/4, 1

Answer Choices:
A. 1/4
B. 1/2
C. 2
D. 4​

step-by-step explanation:

the answer is d

step-by-step explanation:

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large crystals result from very slow cooling.

evaporation of water: this would produce an evaporite which is a sedimentary rock. like a salt pan in a desert. not possible to have volcanic rocks originate this way.

crystalization in molten earth: slow cooling over time. (hundreds to millions of years)

crystalization at earth's surface: this results in fast cooling. (a few hours to a few months or years)

crystalization from cooling off hot water: that would be a hydrothermal deposit. while associated with volcanics they are not volcanic rocks themselves and usually occur fairly rapidly.