(1) Upon the question of the desirability and necessity, in the interest of the general welfare, of the creation of the district.
(2) Upon the question of the appropriate boundaries to be assigned to the district.
(3) Upon the propriety of the petition and other proceedings taken under ORS 568.210 to 568.808 and 568.900 to 568.933.
(4) Upon all questions relevant to such inquiries. [Amended by 1981 c.92 §8; 2009 c.220 §4]