Task: Question Answering
Input (English): Question: For what purpose is the muscle tension technique applied in the treatment of blood phobia used ?: 
 Options:  <1> As a relaxation technique. <2> To divert the patient's attention from the feared stimulus. <3> To accelerate the habituation process. <4> To reduce vasovagal symptoms. <5> It is used in the first sessions to reduce anticipatory anxiety.
Output (English): 4