(a) In any case in which a declaration of taking has been filed as provided in § 27-67-312, any defendant desiring to raise any question with respect to the validity of the taking shall do so by filing a motion to strike the declaration of taking and dismiss the suit.
(b) The motion shall be made on or before the return day mentioned in the summons or notice of publication, or within twenty (20) days after the filing of the declaration of taking, whichever is later.
(c) Failure to file such motion within the time herein provided shall constitute a waiver of the right of any defendant to challenge the validity of the taking.