In a double slit experiment, the distance between the slits is 0.2 mm, and the distance to the screen is 150 cm. What is the phase difference in degrees between the two waves arriving at a point P when the angular displacement of P relative to the central
maximum is 10°? The wavelength is 500 nm. (Convert your result so
the angle is between 0 - 360°).​

this allows people to make the best decision or pursue the best option. when alternatives are weighed using their advantages and disadvantages, the option whose disadvantages outweigh the advantages (based on a qualitative or quantitative analysis) are shunned while those whose advantages outweigh their disadvantages are pursued.  

option number c is the right answer.