free monitoring tools are useful for:
a. calculating customer satisfaction kpi formulas.
b. qualitative measurements.
c. observing what people are saying about a brand.
d. evaluating the effectiveness of social media tactics.
e. measuring branding efforts.

c.observing what people are saying about a brand

Explanation:

Monitoring tool systems are used to keep track of the system's condition constantly, with the goal of early warning against and strengthening errors, defects or issues. The computer, network, storage, health, results, website and Internet use and applications are controlled.

therefore, Free monitoring tools are useful for observing what people are saying about a brand.

b

explanation:

bc its just b