Question

the passage below discusses some of the steps of an engineering - design challenge. select the part of the passage that describes the prototype. hint: a prototype is a model or sample of a solution to a problem. kari is a chemical engineer who works for a cleaning - product company. she is developing a new type of window cleaner. she is told that the new product must have a citrus scent and must not leave streaks on the windows. kari combines several different chemicals to create a test batch of the new window cleaner. she then sends it to a team to test on windows in the lab. the testing team tells kari that the new window cleaner has met all of the requirements.

Explanation:

A prototype is a model or sample of a solution. Kari's test - batch of the new window cleaner is a sample of the final product solution. So the part that describes the prototype is "Kari combines several different chemicals to create a test batch of the new window cleaner."

Answer:

Kari combines several different chemicals to create a test batch of the new window cleaner.