Task: Question Answering
Input (English): Question: What aspects characterize the evaluation of children's problems compared to the evaluation of adults? 
 Options:  <1> Employ techniques and instruments with psychometric guarantees of reliability and validity. <2> Use especially observation, emphasize overt behaviors and emphasize the external determinants of them. <3> Enable the planning of the subsequent treatment. <4> Ensure the confidentiality of the information obtained. <5> Carry out the evaluation through the application of different techniques and instruments.
Output (English): 2