Japanese word 'Kaizen' refers to:

Change for better or improvement

The correct answer is Option (1)- Change for better or improvement.

Kaizen: It is a Japanese word, which means ‘change for better’ or ‘improvement’. It is an approach to improvement of productivity through application of works of American experts such as F.W. Taylor by Japanese after World War II. The goals of kaizen include elimination of waste (which is defined as those activities which add cost but not value to the product or service), just in time delivery, production load levelling of amount and types, standardised work, paced moving lines, right sized equipment and others. A closer Japanese use of the word means ‘to take apart and put it in a better way’. What is taken apart is usually a process, system, product or service. It is a daily activity which humanizes the workplace, eliminates hard work both physical and mental, teaches people how to do rapid experiments using scientific method and how to learn to see and eliminate waste in business processes.