Mechteld Is Primarily Interested in Strategies That Increase Students' Interest

Multiple Choice

Mechteld is primarily interested in strategies that increase students' interest and achievement in mathematics. She begins with interviews of students. Based on those qualitative findings, she then develops an interest questionnaire. Mechteld's sampling for the questionnaire should involve

A) purposive sampling from a new set of participants from the same population.
B) all participants from the qualitative phase.
C) random sampling from a new set of participants from the same population.
D) purposive sampling of participants from the qualitative phase.