_______ organisation has called for further studies on origin of COVID-19 ?

a) WHO
b) UN
c) WTA
d) UNHRC

The World Health Organization (WHO) recently released a report on global tracing of COVID-19 origins, in which it called for further studies on the origin of the SARS-CoV-2 virus. WHO Director-General Tedros Adhanom Ghebreyesus stated that data was withheld from WHO investigators who had gone to China to research the origins of the virus.