Which of the following is 'NOT' an example of customer support services :-

Personal Selling

The correct answer is option (1) : Personal Selling

"1. Personal Selling" is NOT an example of customer support services. Personal selling refers to the process of selling products or services through direct interactions between a salesperson and a potential customer. While personal selling can involve customer interaction, it is primarily a sales activity, not a customer support service.

The other options (2 Maintenance Services, 3. After Sales Services, 4. Technical Services) are examples of customer support services, as they involve assisting customers with product maintenance, addressing post-purchase concerns, and providing technical assistance and support.