You take a class that improves your critical thinking skills. This represents an investment in your

A) human capital.
B) social capital.
C) tangible capital.
D) financial capital.

Improving your critical thinking skills enhances your abilities, knowledge, and productivity, which is an investment in your human capital. Human capital refers to the economic value of a worker's experience and skills, including education, training, intelligence, skills, health, and other things employers value such as loyalty and punctuality.