For His Independent Project in Cooking 101, Henry Decides to Develop

For his independent project in Cooking 101, Henry decides to develop a new dip for raw vegetables, using sour cream and herbs. He tries one combination of ingredients after another, adjusting the seasoning as he goes along. What problem-solving strategy is Henry using?

A) the working backward heuristic
B) the additive model
C) the single-feature algorithm
D) the trial-and-error strategy