Which of the following terms represents how quickly a third-party or vendor can change a system to ensure it meets user needs and the terms of any contracts including agreed levels of reliability, maintainability, or availability?a. Accessibility
b. Maintainability
c. Portability
d. Reliability
e. Scalability
f. Usability

The correct answer is letter A

Accessibility is the quality of what is accessible, that is, it is what is attainable, which is easily accessible. Is related to what is easy to approach, to deal with and to acquire.

Accessibility is a constant concern of architecture and urbanism. It is intrinsically linked to the provision of conditions to people with disabilities or reduced mobility, for safe and autonomous use, whether total or assisted, of public or collective spaces.

i believe the answer is: returns on investments, no wages

people who belong in upper class society would most likely get there by obtaining multiple source of income, which a certain percentage of ownership for businesses. since most of them are job creator, they would most likely get their money from profit, not wages.