Jane is afraid of crowds. if her therapist uses systematic desensitization technique, jane will be asked to

Systematic desensitization technique basically means slowly getting used to something. So, here, Jane for example will be asked to go to a place of a small crowd, for example of 4-5 people first, and slowly get used to it - in the next  sessions she should stay there longer and longer. After that, in the next sessions, Jane will be asked to go to places with gradually bigger crowds and to stay longer in this crown.