One-on-one instruction refers to personalized training or guidance provided directly between an instructor and a learner. Among the options provided:

Self-directed learning involves independent study or learning at one’s own pace, without direct interaction with an instructor.

Classroom instruction typically involves a group of learners being taught by an instructor in a classroom setting.

Facilitation refers to guiding group discussions or collaborative activities, not necessarily one-on-one.

On-the-job instruction occurs when an individual receives personalized training, coaching, or mentoring while performing their job tasks. It is tailored to the specific needs of the learner and takes place within the context of their work environment. Therefore, on-the-job instruction exemplifies one-on-one interaction between the instructor and the learner12.