For the first question, TikTok is NOT an appropriate research method to use in a rigorous academic context.
For the second question, when choosing a reliable website for research, the following are correct:
- .gov
- .org
- .edu
These domains are generally associated with government, non-profit organizations, and educational institutions, which often provide more reliable and fact-checked information. The .com domain can be less reliable as it is open to anyone and can include commercial or unverified content.