<u>Statement :</u> Some strains of mosquito have become resistant to chloroquine - the widely used medicine for malaria patients.<br><br> <u>Courses of Action :</u><br> I. Selling of chloroquine should be stopped.<br>II. Researchers should develop a new medicine for patients affected by such mosquitoes.<br>III. All the patients suffering from malaria should be checked for identification of causal mosquito.

Correct Answer: Only II and III follow
Clearly, chloroquine can still be used to get rid of the non-resistant varieties, and new medicines developed for the resistant varieties. The patients can then be treated accordingly by performing tests for the causal mosquito. So, only II and III follow.