He pledged support for "______ care", where youngsters were looked after by close relatives like aunts or uncles, but not parents.

【正确答案】 B

【答案解析】 根据由where引导的从句对先行词“ ______care”的描述，可知该处表示亲属抚养的意思。kinship care为惯用搭配，意为“寄养，亲属抚养”，符合题意，故本题选B。