Question

toxicology is a field of study that is concerned with ______. the effects harmful substances have on the human body the effects that drugs have on our behavior the effects that alcohol has on the crime rate the effects that nutrition has on our development

Explanation:

Toxicology is the study of the adverse effects of chemical, physical, or biological agents on living organisms (like the human body). The first option matches this definition. The other options: drugs' effect on behavior is more related to psychopharmacology, alcohol on crime rate is sociological/criminological, and nutrition on development is nutritional science.

Answer:

the effects harmful substances have on the human body