The answer to this would be D perspective. I hoped this really helped and Goodluck!
Answer:
Vladimir Lenin
Explanation:
he was the leader of revolutionary Bolsheik party
The basic principals of Uniformitarianism were enough to give geologists a sequencial history of the earth but absolute dating using isotope data from igneous rocks gathered using several different techniques (strontium/rubidium, parent/daughter isotope decay rates) and with the combination of these two geologists were able to develop the geological time scale.