Pick the most correct definition of ecosystem services valuation (ESV).

Answer Options:

a. Through the use of multiple disciplines (e.g., ecology, sociology), realizing that markets already have all the valuation they need to assess ecosystem services, which are free

b. Through the use of economic market evaluation, assigning a monetary value to a good or service provided by ecosystem resources or services regardless of market prices

c. Through the use of economic market evaluation, assigning a monetary value to a good or service provided by ecosystem resources or services with respect to market prices and in relation to market forces

d. Through the use of multiple disciplines (e.g., ecology, sociology), assigning a countable (most often monetary) value to a good or service provided by ecosystem resources or services regardless of market prices