How is the process of stratigraphic correlation carried out? a. by dating through the use of a chronometric method b. by matching stratigraphy from known sites only c. by matching strata by chemical composition and color from several sites across distances d. by correlating stratigraphic markers found at different depths in one location?

The process of matching up strata from a lot sites through the physical, other properties and analysis of chemical. While biostratigraphic dating a relative dating method that uses the associations of fossils in strata to analyze each layer's age approximately. C. by matching color from several sites across distances strata by chemical composition and is the answer.  

The correct answer is: C, by matching strata by chemical composition and color from several sites across distances.

All through by means of matching the color into wide range of sites just as across the distances into the strata by support of chemical composition.

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.

it is either c or d and i know for sure it is not a or b