In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
One example: Question: A 13-year-old girl is operated on due to Hirschsprung illness at 3 months of age. Which of the following tumors is more likely to be present? 
 Options: <1> Abdominal neuroblastoma <2> Wilms tumor <3> Mesoblastic nephroma <4> Familial thyroid medullary carcinoma.
Solution is here: 2
Explanation: The answer to the given question should be a tumor, therefore Wilms tumor is the correct answer for the given question.

Now, solve this: Question: In toxicology, the probability of adverse effects, harmful to health, from exposure to a toxic agent is known as: 
 Options:  <1> Danger. <2> Exposition. <3> Risk. <4> Answer. <5> Effect.
Solution:
3