Under marketing mix, which of the following is a part of 'Product Mix…

The correct option would be: Option 4- All of the above.

All the mentioned elements - quality, design, and brand name are integral parts of the product mix.

In marketing, the product mix refers to the combination of products a company offers to meet its market's needs and demands. This mix includes various elements such as product features, quality, design, brand name, packaging, and other attributes that collectively contribute to the perceived value of the product in the eyes of the consumer.

Marketing Mix: Elements
PRODUCT	PRICE	PLACE	PROMOTION
Product Mix	Price Level	Channel Strategy	Promotion Mix
Product Quality	Margins	Channel Selection	Advertisement
New Product	Pricing Policy	Channel Conflict	Personal Selling
Design and Development	Pricing Strategies	Channel Cooperation	Sales Promotion
Packaging	Pricing Change	Physical Distribution	Publicity
Labelling			Public relations
Branding