Answer:
Meriwether Lewis, William Clark, and Sacagawea
Explanation:
<span>C. provides us with an insight into everyday life and strongly held beliefs.</span>
Answer: Secondary research
Explanation: Secondary research is research method that is based on the already existing research done by someone else. This source material that is used for secondary research is gained from the primary source of information in the form of papers, theories, data, etc.
The case mentioned in the question about Gillian doing a research related with the pharmaceutical industry. For research , Gillian is using data, forecast and other sort of publication which are the source of information collected by someone else and he is using it for his research.
Answer: a major religious and cultural tradition of South Asia, which developed from Vedic religion.