The average speed of light is 186,000 mph
Well I’m not sure because you don’t have anything listed
The tangent looks good.
The curve is a bit crooked, at the 0.9 and 1.
But overall, cool graph.
The correct answer is option #4. The greatest obstacle to developing solar energy is large areas required to collect sufficient energy. Solar energy is the energy that is the sun is producing and being converted into thermal energy that can be used for everyone's daily lives.