At which stage of the organizational buying decision process would purchasing and engineering personnel visit potential suppliers to assess their facilities, production capability, and quality control?

Answer: Alternative evaluation.

Explanation:

Alternative Evaluation is the phase of the purchaser decision process where the consumer makes use of the information gotten from the information search to assess other brands in the category of the product.

For example, if a consumer is assessing a group of television and he or she has identified three attributes like price, performance and design. The consumer will assess each brand and make decision based on his or her assessment.