Answer:
tempera goes with used during the middle ages for altar and church paintings , pastel goes with uneffected by mousture , fresco goes with makes it easy to draw light and dark highlights , oil goes with allows broad area of colors rather than draw a outline
Explanation:
Because they didn't think it was safe or in other words appropriate for other people to see
False because it can confuse you if it is on all the time so they have it as a modifier