The two responses that illustrate improvements in productivity are:
-
After hiring an additional employee, a factory manager has seen a large increase in factory output.
(This indicates that the addition of resources has led to an increase in the production of goods.) -
After adopting a new typing strategy, a data scientist is able to provide more data services to clients.
(This shows that a change in method has resulted in increased output or efficiency in providing services.)
The other options do not necessarily demonstrate direct improvements in productivity, as they involve merely increasing input (more ingredients, working overtime) or enhancements due to practice (washing dishes faster) without a structural change that leads to higher efficiency or output per resource used.