Bent, the lone pair on the central atom push away the other atoms and the most stable configuration of the lone pair and two atoms is trogonal planar. But since you cannot see the lone pair, the shape of the three atoms is bent.
The shape of a molecule with a central atom bonded to two atoms and one lone pair is classified as bent. This results from the arrangement of the bonded atoms in response to the repulsion caused by the lone pair. Thus, the correct answer is A. Bent.
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