Which of the following is not derived from crude oil ?
diesel
coal
wax
plastic

Gettysburg address question. what is the purpose of this address?

Francine, a college freshman, has agreed to participate in a psychology research study. before she begins her participation, she reads a statement written by the researcher explaining the purpose of the research and the potential risks of participation. it also explains that francine is free to withdraw from the research at any time. in providing francine with this statement, the researcher has followed the ethical guidelines of for participants.

Which of the following is the best interpretation of this quotation?