In a certain code, 'COLD' is coded as '3142', 'WARM' as '2143', and 'BOLD' as '4132'. What is the code for 'MOLD'?

Answer: D. 4132
The common letters 'O' and 'D' in 'COLD' and 'BOLD' help establish that 'O' = 1 and 'D' = 2. Therefore, 'MOLD' = 4132.