Answer: B) Social supports
Step-by-step explanation:
Social support is the support and care-provided by family, friends and related people in particular social situation.Social support helps in dealing crisis, gaining motivation , performing tasks , making judgement, understanding situation etc.
According to the question,Sharon is sharing ideas with her friends to gain opinion about which subject to do major in is displaying she is seeking help from social support to make a decision.
Other options are incorrect because community, family and polling data is not factor that impacts decision of Sharon in terms of psychological health .Thus, the correct option is option(B).