It's a bit annoying that so many adults continue to mix up speculation with real evidence, and make up their minds based on gut feelings. That is not to say governments shouldn't put pressure on China to be more transparent, of course they should. But judging from the actual information available, the virus most likely jumped from an animal to humans due to the bad conditions of wet markets in China.
While China is to blame for such markets, people need to bear in mind that the same can happen in many other places where animals are farmed closely together with humans. Even if it was true, the Wuhan lab theory would unfortunately distract from this real problem.