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

All of the above

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.