Comment by ThePhantom

The lab leak hypothesis makes the most sense. The lab in Wuhan which researches coronaviruses conducts experiences on animals, including bats. Like other labs, there are dedicated personnel for hydrating and feeding the experimental animals. Notably, there are "wet markets" in Wuhan where live animals are sold, including bats, which harbor coronaviruses. Someone who is working in the facility in charge of maintenance of experimental animals has a choice of either sacrificing the animals as per protocol, or selling them to a wet market to make extra money. The most likely scenario was that someone sold the animal, most likely a bat, to a wet market, which happened to contain a virulent coronavirus strain that then infected humans.