Multiple choice: what do we call the brightness of a color, in relationship to black? a) value b) hue c) purity d) saturation

Where is the above note played on the guitar? open second string open third string second string, first fret third string, second fret

Indian architects worked with construction techniques? a. concrete b. skeleton c. stone and wood d. post-and-lintel only answer if you are 100% positive your answer is correct! 10 points!

Suppose that you are in a room with 3 doors and a crack in the ceiling for light. that is all. the doors each have a sign on them that says what there is behind them. door #1. a pool of corrosive acid. door #2. a crocodile that hasn't eaten in 8 months. door #3. a solar "oven". a giant lens that focuses all the sunlight at the entrance of the door. you must choose a door, which door do you choose?