The Traditional Evidence Rule Is That a Non-Expert, or Lay

The traditional evidence rule is that a non-expert, or lay witness, may state a relevant opinion if:

A) the opinion is based on facts that he or she has observed.
B) the opinion is of the kind that normal persons form constantly and correctly.
C) the witness cannot adequately or accurately describe the facts on which his or her opinion is based.
D) all of the above, if other requirements have been met.