 Parmott sued Dexter in an automobile collision case. At trial, Parmott wishes to show by extrinsic evidence that Wade, Dexter's primary witness, is Dexter's partner in a gambling operation. This evidence is
admissible as evidence of Wade's character. admissible as evidence of Wade's possible bias in favor of Dexter. inadmissible, because criminal conduct can be shown only by admission or a record of conviction.  inadmissible, because bias must be shown on cross-examination and not by extrinsic evidence.