What happens when a small amount of white is added to red?

Correct answer: A lighter tint of red

The governing concept is colour value and the distinction between a tint and a shade. In paint, adding a small amount of white increases lightness while retaining the hue family of red; the result is called a lighter tint of red. Therefore option B is correct. Adding black would make a darker shade, white does not create green or a complementary colour, and red plus white cannot produce pure violet.