This one.
"No change came over the old face. As though vast calculations were going through her head, she watched all the pattern shifts."
The status of the scientist is that she watches the patterns shift.
Answer:
Explanation:
The goal is to identify any usability problems collect qualitative and quantitative data and determine the participant's satisfaction with the product.
The answer is A. I believe. My bad if it is incorrect
Answer:instruction manuals
Explanation:
Bcz we does not use this as a product
