; (2) one-way and two-way transmissions through open broadcast, closed circuit, cable, microwave, broadband lines, fiber optics, satellite, or wireless communications devices; (3) audio conferencing; and (4) other media used in a course in conjunction with any of the technologies listed in paragraphs (1) through (3). (c) Instructor For purposes of subsection (a), an instructor is an individual responsible for delivering course content and who meets the qualifications for instruction established by the institution of higher education’s accrediting agency. (d) Substantive interaction For purposes of subsection (a), substantive interaction is engaging students in teaching, learning, and assessment, consistent with the content under discussion, and also includes at least two of the following: (1) Providing direct instruction. (2) Assessing or providing feedback on a student’s coursework. (3) Providing information or responding to questions about the content of a course or competency. (4) Facilitating a group discussion regarding the content of a course or competency. (5) Other instructional activities approved by the institution of higher education’s or program’s accrediting agency. (e) Regular interaction For purposes of subsection (a), an institution ensures regular interaction between a student and an instructor or instructors by, prior to the student’s completion of a course or competency— (1) providing the opportunity for substantive interactions with the student on a predictable and regular basis commensurate with the length of time and the amount of content in the course or competency