Final answer:
BF₃ or boron trifluoride has a trigonal planar molecular geometry, which is highly symmetrical, leading to the cancellation of dipoles and a net dipole moment of 0 D.
Step-by-step explanation:
The molecule with a dipole moment of 0 D among the options given is BF₃ (boron trifluoride). The molecular geometry of BF₃ is trigonal planar, which is a highly symmetrical shape. Because all of the B-F bonds are equal in bond strength and the molecule is symmetric, the dipoles in BF₃ cancel one another out in three-dimensional space, resulting in a net dipole moment of zero.