1. regarding supplier performance measurement, the number of customer complaints comes under measures.

a. service
b. cost/price
c. quality
d. delivery

Explanation:

Service: The customer complaints about services in 2 cases.

Cost / Price: This might be an bigger issue unless and until the price satisfies the quality. If the quality is poor and if the pricing is high then surely it rises bad impression towards the product.

Quality: The most important element of business need. Any element can be compromised but the quality cannot.

Delivery: This is one another significant element. This shows the punctuality connected to delivering quality goods and safely delivering goods.

answer; institution;