Which of the following is true?

A) Activist research is not always participatory research.
B) Activist research is always participatory research.
C) Participatory research is always survey research.
D) Field research is always activist research.

Activist research is research undertaken with the goal of promoting social or political change. While participatory research involves collaboration between researchers and participants or community members, activist research does not necessarily require the participation of those affected by the issue being studied. Therefore, A is the best choice. Choices B, C, and D are incorrect because they do not accurately describe the relationship between the different types of research.