Problem: What principle of portfolio assessment is described in this statement: Educational community which included the parents of students should also be oriented on the portfolio assessment implemented as one of the authentic tasks of the students. a. An integral part of the portfolio process is the self-evaluation of learning. b. The teacher should serve as the facilitator of the portfolio assessment. c. Parents of the students should have a background of portfolio assessment. d. For both teachers and students, portfolio assessment is a developmental process.