Which statement is an example of determining the relative age?

determining which individual is older based on the style of clothing they wore in a picture

knowing the age of a grandmother because she was a kid during the great depression

doing a genealogy search to find out a great, great, grandfather was born june 2, 1890

use birth certificate records to confirm the first birth occurred in the hospital on january 11, 1750

what is the question because that is not a question.

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.