Final answer:
The statement that a new machine can bind books twice as quickly as a person can answers the economic question: How does this impact productivity and efficiency?
Step-by-step explanation:
The economic question that is answered by the statement that a new machine can bind books twice as quickly as a person can is C) How does this impact productivity and efficiency?
This information provides insight into the impact of the new machine on the productivity and efficiency of bookbinding. The machine's ability to bind books faster implies increased productivity and efficiency in the bookbinding process.
For example, if it took a person 1 hour to bind 10 books, the machine can bind the same number of books in just 30 minutes. This shows how the machine's increased speed improves productivity and efficiency in the bookbinding process.