Final answer:
The COVID-19 pandemic and its impact on the world.
Step-by-step explanation:
The subject of this question is Health. The question is asking about the COVID-19 pandemic and its impact on the world.
COVID-19, also known as the coronavirus, originated in Wuhan, China in December 2019 and quickly spread worldwide. It was officially declared a global pandemic by the World Health Organization in March 2020.
The disease has had significant effects on various aspects of society, including education, economies, and public health systems.