Sustainable development can be defined as an approach to the economic development of a country without compromising with the quality of the environment for future generations.
Answer:
C.
Explanation:
<u>am/are/is </u>are all verbs in present progressive tense.
Example: Michael and Phil <em>are runn</em><u><em>ing</em></u>.
"In English grammar, progressive aspect refers to a verb phrase made with a form of be plus -ing that indicates an action or condition continuing in the present, past, or future."
Sources: thoughtco.com- Progressive grammar
