Answer: Hindu caste system was kinda strict. You couldn't move up at all in the caste system.
At first you have to write the variables out which are

now you have to combine like terms


now you add these two variables and end up with answer of
The Deccan plateau is located in C. Southern India.
Answer:
The answer is Option C: Index fossils.
Explanation:
Index fossils are used to identify geologic periods or faunal stages in rock layers. These fossils must have a wide geographic distribution and manifest obvious evolutionary trends to help geologists and others who need this geological data to better understand the time scale and to pinpoint a time period. For example, ammonites were common during the Mesozoic Era, but they were extinct by the Cretaceous period. Geologists would use ammonites to help determine this time frame if present.