___________ is the process of classification of products into different groups on the basis of some of its important characteristics.

Grading

The correct answer is option (4) : Grading

Grading is the process of classification of products into different groups, on the basis of some of its important characteristics such as quality, size, etc. Grading is particularly necessary for products which are not produced according to predetermined specifications, such as in the case of agricultural products, say wheat, oranges, etc. Grading ensures that goods belong to a particular quality and helps in realising higher prices for high quality output

Standardisation : Standardisation refers to producing goods of predetermined specifications, which helps in achieving uniformity and consistency in the output. Standardisation ensures the buyers that goods conform to the predetermined standards of quality, price and packaging and reduces the need for inspection, testing and evaluation of the products

Promotion: Promotion of products and services involves informing the customers about the firm's product, its features, etc., and persuading them to purchase these products. The four important methods of promotion include advertising, Personal Selling, Publicity and Sales Promotion

Branding: A very important decision area for marketing of most consumer products is whether to sell the product in its generic name (name of the category of the product, say Fan, Pen, etc.) or to sell them in a brand name (such as Pollar Fan or Rottomac Pen). Brand name helps in creating product differentiation, i.e., providing basis for distinguishing the product of a firm with that of the competitor, which in turn, helps in building customer's loyality and in promoting its sale.