In Fahrenheit 20 degrees celsius is 68 degrees fahrenheit.
In Kelvin 20 degrees celsius is 293.15 degrees Kelvin
C. How are Bob and Derek getting there? Are they taking the car or the train?
This is the only sentence that is grammatically correct.
Five sources for informational text or research material are:
1) Books
2) Periodicals & Newspapers
3) Reliable Articles (both written or internet) that are not always one-sided
4) Documentaries
5) Historical records
Album because the subject is the thing that the sentence is talking about