Frederick taylor is known best for what concept that improves efficiency in manufacturing?
a) time-study analysis
b) assembly line principles
c) just-in-time inventory management
d) computer management

The correct answer is A. Frederick Taylor is known best for the concept of time-study analysis.

Explanation:

Frederick Winslow Taylor was a mechanical engineer at Midvale Steel Works in Pennsylvania. He is known mainly for his theory of "scientific production control", which was very influential in the period of classical capitalism before the First World War, but also found some application in the early stages of communist planning in the USSR, especially during the life of Lenin, who admired Taylor.

Frederick Taylor introduced the control in order that the work be performed according to a pre-programmed sequence and time, so that there is no operational waste.  This concept was named "time-study analysis".

that would be the steamboat because none of the other things are forms of transportation

d.

the northwest territory became the most densely populated area in the u.s.