________ is a life-threatening adverse reaction to a drug, food, or insect bite

A 100 ?L sample of blood is diluted with 200 ?L saline solution. What is the dilution ratio of the sample after dilution?

A) 1:2 B) 1:3 C) 1:4 D) 1:10

You have been called for a young male patient who has been withdrawn. The patient appears depressed and when you ask him if he is thinking about hurting himself, he answers "yes." The next question asked by the EMT should be:

A) "Do you have a plan?" B) "Do you take medications?" C) "Are there guns in the house?" D) "Do you want to go to the hospital?"