Which of the following is an objective of standardization?

All of these

Standardisation refers to the process of setting standards for every business activity; it can be standardisation of process, raw material, time, product, machinery, methods or working conditions. These standards are the benchmarks, which must be adhered to during production. The objectives of standardisation are:
(i) To reduce a given line or product to fixed types, sizes and characteristics.
(ii) To establish interchange ability of manufactured parts and products.
(iii) To establish standards of excellence and quality in materials.
(iv) To establish standards of performance of men and machines.