Which option is more suitable for creating an initial light warm skin tone mixture?

Correct answer: White with small amounts of red and yellow

The governing concept is building a light tint from a light base and warm pigments. White provides a pale value, while small amounts of red and yellow introduce warm red-orange or peach-like tendencies. Because the pigments are added gradually, the tone can be adjusted without becoming too strong; therefore option C is best. Blue and black darken or cool it, green and violet shift it away, and pure red is too intense.