Final answer:
The molecule that can accommodate a trans C=C bond is trigonal planar geometry.
Step-by-step explanation:
The molecule that can accommodate a trans C=C bond is trigonal planar geometry. In trigonal planar geometry, the central carbon atom is surrounded by three other atoms or groups in a flat, triangular arrangement. This arrangement allows for a trans arrangement of the double bond, where the two carbon atoms on either side of the double bond are in the same plane.