F. W. Taylor, the founding father of Scientific Management movement propounded the theory which was conceived to be a scientific methodology of—

Definitely Observation and Measurement; Generalisation, I am not so sure on; if I had to analysis his thought process though, as his observations were categorised into bigger groupings, and the observation that labour needs to have set time breaks during working hours, as "generally" efficiently improved afterwards, then YES generalisation too is correct.

So agree, with D) being correct.

My answer will be option D) All of these.

All of the above is my answer............thanks mr wasi.

His theory had four basic principles:1) find the one "best way" to perform each task,2) carefully match each worker to each task,3) closely supervise workers, and use reward and punishment as motivators, and4) the task of management is planning and control.

Answer is D for this question 

d........................................................................

The answer is : Option (D )

I agree with all    The Right answer is D. :)

A. Answer D. All of these.

Yes The Right answer is D. :)