Maintaining a positive attitude supports the development of effective customer relationships. A positive service attitude communicates willingness to help, professionalism, confidence, and constructive engagement even when the customer's issue cannot be resolved immediately.

Option A damages trust because customers require complete and relevant information. Option B is inappropriate because communication should be adapted to the customer's level of technical knowledge rather than using technical terminology indiscriminately. Excessive jargon can create confusion and reinforce distance between the customer and analyst. Option C also undermines the relationship because understanding the customer's business activities and the impact of service disruption enables the analyst to communicate more effectively and appreciate the significance of the issue.

SDA v9 relationship management focuses on collaboration, customer relationships, cultural awareness, rapport, and professional communication. The analyst should understand customer needs, adapt communication appropriately, demonstrate willingness to assist, and maintain professional behaviour. Consequently, among the four options, maintaining a positive attitude is the only behaviour that actively strengthens the customer relationship.