Which of the following is most accurate in pinpoint a time period on the geologic time scale during which rock layer was formed ? a - index fossils b cave deposits c heat flow d sandstone

The answer is A-index fossils

Step-by-step explanation:

we know that

major arc is defined as the bigger arc connecting two points on the edge of a circle. measure of major arc is always more than ° or π radian

in this problem

the mayor arc is bac

find the ratio of the measure of the major arc to the measure of the minor arc

therefore

the answer is the option