What would people most likely have experienced if they flew over the Chernobyl site two days after the explosion? 

A)  an acute exposure to radioactive substances 
B)  a subchronic exposure to radioactive substances 
C)  a subacute exposure to radioactive substances 
D)  a chronic exposure to radioactive substances

Acute Exposure

Short-term contact with a substance that might result in immediate harm to health or the environment.

Radioactive Substances

Radioactive substances contain unstable atoms that release radiation during their decay process, used in various applications but posing risks of exposure.

Chernobyl Site

The location in Ukraine of a catastrophic nuclear reactor accident in 1986, resulting in significant release of radioactive particles into the atmosphere.