Answer:
sad, mad, upset
Explanation:
let's say you had this thing you really wanted to do but your were told you cpuldnt that make you feel those emotions
Technically it is true that Frederick Scott Archer introduced the concept of combining artificial and natural light in the studio, but it should be noted that this concept had been used before, just without much fame.
"A" is probably the best choice. All of your other choices are close-ended questions, and can only be answered with a simple yes or no, But "A" is an open-ended question because the answer wont be just a "yes" or "no".
Hope this helps!