Adding all the three primary colors; red, green, and blue-at maximum intensity produces the color while adding any two of the three primary colors at maximum intensity produces the trio of complementary colors-yellow, magenta, and cyan.

a) white
b) blue
c) lime
d) black

Black.

Explanation:

All three primary colors negate each other to produce a dark grey color.  A small correction: Green is a secondary color. And, Red, Blue, and Yellow are three primary colors. The colors produced from mixing the secondary colors are known as tertiary colors.

i think the answer could be either a or b because both are part of the post production part. hopefully this you a little.

i am 100% sure the answer is popular!