Toxicology is the study of what? medicine substances that have an adverse effect on living organisms chemical dyes and colorants the insects that may be found at crime scenes

Based on the choices above, the choice that is appropriate or a way of answering as to what toxicology is the first choice which reads that medicine substance that has an adverse effect on living organisms. It is because toxicology is the study of science that concerns with effects, nature and as well as poison in which base on the chosen choice, it talks more about the substances' effects.