If 'COLD' is coded as 10, 13, 16, 19 and 'WARM' is coded as 12, 15, 18, 21, what is the code for 'HEAT'?

Answer: A. 11, 14, 17, 20
The coding pattern shows an increase of 3 for each letter. Therefore, 'HEAT' would be coded as 11, 14, 17, 20.