What should be the social worker's short-term goal when working with a single mother and her three children living next to a mining site, where the children are consistently tired and missing school due to illness, and the mother has no medical insurance, working two jobs to support her family but still struggling to get by?

A) Provide immediate medical assistance to the children
B) Assist the mother in obtaining medical insurance
C) Advocate for improved environmental conditions near the mining site
D) Connect the family with financial assistance programs and resources