Answer:
a. high; social; low; human
Step-by-step explanation:
The social capital refers to the capital in which the people interact with each other or we can say social interactions in able to learning, skills and knowledge.
While on the other hand, the human capital stated the skills and knowledge could be learned either in formal or informal way
Therefore according to the given situation, Billy as high on social capital and low on human capital
hence, the correct option is a.