B) Brain...spinal cord, for some reason I keep ending up on questions you've asked.
The main cause is cooking
The answer is D and H, washing his hands for 5 seconds. Washing your hands for 5 seconds is not productive and, but 30- 45 seconds is productive. Touching the door with your wet hands is pushing it now. Why he should have dried his hands more
In my opinion that is disgusting. If this was an actual event and I knew this info I would not want to touch any salad he prepared.
Put a piece of aluminum foil on the chair when you get up
There is nothing to divide