"A Sampling Procedure Where a Sample Is Chosen from the People

Multiple Choice

"A sampling procedure where a sample is chosen from the people who are available to participate in research.Often just about any person who can understand the instructions and complete the task is acceptable.This is the technique used in many psychological experiments (often involving undergraduate students) ." What sampling procedure is this a glossary definition of?

A) Independent sampling.
B) Casual sampling.
C) Random sampling.
D) Purposive sampling.
E) Convenience sampling.