Artrelle is taking part in a research study that examines her thoughts on the political election taking place in her country. Each night, before bed, she is to complete a questionnaire that gathers information on these topics. She submits her completed questionnaires to the researchers at the end of each week. What type of research method is being used

a. experience-sampling method
b. diary method
c. ecological momentary assessment
d. day reconstruction method
e. none of these are correct