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'.

Example Input: Question: Reactivity is considered a source of error when using Observation as a method of obtaining information. Where does it come from? 
 Options:  <1> From the context in which the Observation is generated. <2> Of the observed subject. <3> Of the chosen procedure. <4> From the observer. <5> Of the type of instrument chosen.
Example Output: 2

Example Input: Question: The evaluation of the electrodermal activity allows a measurement of: 
 Options:  <1> The general activation of the Autonomic Nervous System. <2> The parasympathetic activation. <3> The visceral activity. <4> The cortical attitude. <5> The Delta rhythm.
Example Output: 1

Example Input: Question: In the ear of mammals: 
 Options:  <1> The sterocilies of the hair cells contact the basilar membrane. <2> The tympanic ramp contains endolymph. <3> The basilar membrane is wider and more flexible at the level of the helicotrema. <4> The sensory cells are those of Deiter. <5> The oval membrane has a larger surface than the tympanic membrane.
Example Output:
3