Your research question is: Does the color blue make people feel calmer? Using what you have learned about the scientific method, explain in two to three sentences what your hypothesis will be for your research question and how you could test your hypothesis.

*this is from psychology class

Blue is the colour of the mind and is essentially soothing; it affects us mentally, rather than the physical reaction we have to red. Strong blues will stimulate clear thought and lighter, soft blues will calm the mind and aid concentration. Consequently it is serene and mentally calming.

Explanation:

http://www.colour-affects.co.uk/psychological-properties-of-colours

this would and i think the answer is d