The Taskforce on Nature-Related Financial Disclosure (TNFD) defines natural capital as:

The Taskforce on Nature-related Financial Disclosures (TNFD) adopts a definition aligned with theNatural Capital Protocol, describingnatural capitalas the totalstock of natural resources—both renewable and non-renewable—that deliver ecosystem services.

“Natural capital is defined as the stock of renewable and non-renewable natural resources (e.g. plants, animals, air, water, soils, minerals) that combine to yield a flow of benefits to people.”

This definition clearly supports option C. It reflects how nature contributes economic value to societies and businesses through ecosystem services such as clean air, fertile soil, and water regulation.