Herbal companies traditionally sold their products in cylinder$-$shaped plastic containers that were very characteristic of the herbal supplement market. One company broke with tradition and began to sell its herbal products in bottles that appeared to be straight from the pharmacy's shelf. They were rectangular with white labels that looked very professional. Sales went through the roof. What form of stimulus generalization most likely worked for the herbal company?

Group of answer choices

Shaping

Masked branding

Continual reinforcement

Halo effect