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'.

Input: Consider Input: Question: For self-registration to become an effective tool for clinical evaluation, it must meet the requirements of: 
 Options:  <1> Have a complete design that includes each of the significant units of a complex behavior and its memory. <2> Have a simple design, without sophistication or complexity, and always accompanied by a prior training for its completion. <3> Do not limit your compliance to the events that occurred at the time but also to the memory that you have of them at later moments. <4> Cover each and every one of the behaviors problems identified by the client. <5> Be completed by a significant person who knows the client well.

Output: 2


Input: Consider Input: Question: We want to compare the means of two populations that follow normal distributions and have the same variance. We take two samples of size n1 and n2. When constructing a confidence interval we will have to calculate a value t for a Student's T distribution with: 
 Options:  <1> 2 degrees of freedom. <2> n1 + n2 - 2 degrees of freedom. <3> (n1 + n2) - 1 degrees of freedom. <4> (n1 x n2) / 2 degrees of freedom. <5> Degrees of freedom calculated with the formula of Welch or Smith-Satterwhite.

Output: 2


Input: Consider Input: Question: The reinforcement circuit can be activated by electrical stimulation of the mesolimbic system, originating in the ventral tegmental area and projecting: 
 Options:  <1> To the hippocampus, inhibiting the release of dopamine. <2> To the nucleus accumbens, causing release of dopamine. <3> To the prefrontal cortex, stimulating the release of glutamate. <4> A mesencephalic reticular formation, causing release of glutamate. <5> To the pituitary, inhibiting the release of dopamine.


Output: 2