To effectively cater to the needs of its customers, yankin, a retail company, believes that it is important to train its employees on speaking and listening skills. yankin can enhance its employees' communication skills by providing training on

Interpersonal skills.

Explanation:

The interpersonal skills are those which we use daily to communicate and interact with other people, be it individually or in groups. They mostly include communication skills such as listening and effective speaking. This is what Yankin, the retail company, believes it's best for their employees to learn, therefore, providing training on interpersonal skills.