I know the first one:
The person might have trouble seeing shades of red, blue, and/or green. Color-sensitive pigments in the cones of the eye are absent. These inabilities to see certain colors ends up leading to the person seeing the colors in question as a mixture of the same shade.
Answer: An objective is, not influenced by personal feelings or opinions in considering and representing facts. Meanwhile, a goal is the object of a persons ambition or effort; of an aim or desired result.
Brain? Thanks!
Answer:
either he is playing hard to get or he ain't worth your time so don't waste it on him
