The office of an appointed member becomes vacant if the member—
(a) completes a term of office and is not reappointed; or
(b) is disqualified from continuing in office under section 70 ; or
(c) is absent from 3 consecutive meetings of the board without the board’s permission and without a reasonable excuse; or
(d) resigns by notice under section 75 ; or
(e) is removed from office under section 76 .