I'd have to say 2 is the best answer, but I don't really know. Hope this helps!!
Yes it is true but high intake of vitamins can cause teeth and bone density<span />
"Generalisation"
When a certain conditioned stimulus leads to a conditioned response repeated over time, it is developed a tendency to respond in the same way when a similar stimulus is given. Because we generalise the stimulus to give a similar response, "generalisation" is the name given to the mental process that makes this phenomenon to happen.
Yesss that’s true!!!!!!!!