Which refers to the Stop of skill, ability, education, knowledge in the people

Solution:
The question is incomplete and unclear,
The correct question may be "What refers to the Stock of skill, ability, education, knowledge in the people?"

The answer to this question is - The labour force can be considered as stock of skills , ability, education and knowledge if provided proper training, better education, health facilities etc. and it is considered as human capital of the nation.

Hope it will help.