Hi!
The correct option is A. June should have smelled the child's breath first.
Step-by-step explanation:
The first thing that needs to be done when a person ingests a harmful (toxic) substance is to illicit a vomit so that the substance is expelled from the body. Considering June's case, the child had already vomited, and there was no need for June to try to induce further vomiting. What June should have done was to smell the child's breath to know which chemical the child had ingested so that June would be able to clearly explain to the doctors the cause of the child's response, and the treatment could be done accordingly.
Hope this helps!