To prove that \( STUV \) is a parallelogram, one of the valid criteria is that both pairs of opposite sides must be congruent. Therefore, the correct response is:
ST¯¯¯¯¯¯¯≅UV¯¯¯¯¯¯¯¯ and TU¯¯¯¯¯¯¯ ≅SV¯¯¯¯¯¯¯.
This criterion states that if one pair of opposite sides of a quadrilateral is congruent, then the quadrilateral is a parallelogram. In this case, for \( STUV \), the sides \( ST \) and \( UV \) being congruent, along with \( TU \) and \( SV \) being congruent, is sufficient to conclude that \( STUV \) is a parallelogram.