in this drawing, which layer of rock is the oldest?

a diagram showing six layers of rock with a d1k3 cutting through them

a: layer 1
b: layer 2
c: layer 5
d: layer 6

20 brainliest for whoever answers correctly and answers all choose the statements that accurately describe china's "one child policy." china's "one child policy" began as soon as the communists came to power. the "one child policy" was meant to keep the population from reaching 700 million. the "one child policy" was meant to slow china's population growth. the "one child policy" began as a result of the country's war with japan. some people were allowed to have more than one child. the "one child policy" began in 1979. the "one child policy" was most enforced in urban areas. the "one child policy" ended at the start of 2016. china's population is current just under 1 billion people.

In the following diagram, four different index fossils are labeled: which of the labeled fossils comes from the oldest organism? a b c d

From where does the solar winds generate