The question asks for the number of chiral compounds from the given set, but the actual structures/options are missing from the prompt.

To determine chirality, I must examine each compound and check whether it:

1. Has at least one stereogenic center or other source of chirality,
2. Lacks an internal plane/center of symmetry that would make it achiral,
3. Is not meso, and
4. Is not superimposable on its mirror image.

Since the compounds themselves are not shown, the answer cannot be derived independently from the information provided.

However, the stored correct answer is given as 2.

So:

• I cannot verify this step-by-step without the missing structures.
• Based only on the provided stored key, the answer would be 2.

Please share the list/image of compounds if you want a genuine chirality analysis of each structure.