Dr Henries Decided That It Would Be Too Difficult and Costly

Dr. Henries decided that it would be too difficult and costly to assess all bilingual students among three states receiving federal funding for bilingual studies. Dr. Henries serves as an advisor to the bilingual club on campus as well as advisor to the foreign-language students. Dr. Henries's most cost efficient and timely option for sampling would be:

A) simple random sampling.
B) stratified random sampling.
C) cluster sampling.
D) convenience sampling.