When you send off the proposal three days later, you inadvertently learn from the client that he never received any correspondence from your coworker. "What dimension of professional behavior did your coworker violate when with the prospective client?

The question is incomplete:

You work for AdSmart, a marketing research firm. You and a new coworker are meeting a potential client for lunch. You have several morning meetings on the same day as the lunch meeting, so you arrange to meet your coworker and the potential client at 12:15 p.m. at the restaurant. You arrive five minutes early, and the prospective client arrives shortly thereafter. You both wait in the lobby until 12:35 p.m. when you decide to be seated. You check your smart  phone and see no received communications from your colleague. Finally, at 12:45 p.m., your coworker arrives.

During the lunch, your coworker tells several white lies and reveals information regarding your boss that should have been kept confidential.  The prospective client doesn't seem to notice these indiscretions, however, when your coworker begins to badmouth his former employer, a competitor of AdSmart, the client appears ill at ease.

Despite the rough start to the lunch meeting, all ends well. You believe that with the appropiate follow-up, the potential client will become one of the firm's more lucrative partnerships. Once you are back at the office, you debrief with your coworker and discuss the next steps. You decide to take on the task of putting together the proposal the client has requested, and your colleague agrees to send a follow-up note thanking the client and indicating that the proposal will arrive within the next week.

When you send off the proposal three days later, you inadvertently learn from the client that he never received any correspondence from your coworker. "What dimension of professional behavior did your coworker violate when with the prospective client?

Courtesy and respect

Explanation:

The dimension of professional behavior that your coworker violated with the prospective client is courtesy and respect. He violated courtesy because it is about being polite and he was not polite because he arrived late to the meeting and he didn't let you know about it.

Also, he violated responsibility because it is about doing the things that you are in charge of and he was in charge of sending a follow-up note and he didn't do it.