Which colour is obtained by adding a small amount of red to blue?

Correct answer: Bluish violet

The governing concept is colour mixing with one dominant component. Blue combined with red moves toward violet or purple. Since the quantity of red is small, blue remains dominant, producing bluish violet; therefore option C is correct. Yellowish green comes from yellow and blue, reddish orange comes from red and yellow, and bright yellow does not result from adding red to blue. The proportion explains the word “bluish.”