I would say it is D because loneliness is an emotion.
Answer:
The answer is below
Explanation:
Understanding economics assists people to comprehend and interpret the socio-economic dynamism of their immediate environment and the world at large.
It facilitates people to comprehend their society, businesses, markets, and governments' needs and economy.
Thereby, equipped them to react to the risks and opportunities that arise when various socioeconomic issues transform.
D. The correct form would be:
"What have they accomplished so far?"
