A
The reason this is is because she the first sentence says that she believed that people would eat the mashed potatoes faster if they were brighter color.
This question would be false
Letter B
without a medium, there is nothing to compress, hence, no wave. A fast- medium like a gas (air) is easy to compress and allows waves to move through it easily. a slow medium, like a liquid, is still pretty fast, but not as fast as air.
Does it have to be that exact word. cause it is just another term for psuedopodium