The question asks which compounds show geometrical isomerism, but the actual structures/formulae for options A, B, C, D are missing in the prompt.

To determine geometrical isomerism, we must inspect each compound and check the required condition:

1. For alkenes: each carbon of the $C=C$ bond must have two different substituents.
2. For cycloalkanes: restricted rotation can lead to cis-trans isomerism when suitable substituents are present.

Since the options themselves are blank, it is not possible to independently derive which of A, B, C, or D exhibit geometrical isomerism.

However, the stored correct answer is given as C, D. Because the structures are absent, I cannot verify this from first principles.

So:

• I cannot fully solve the question as stated.
• Based only on the provided stored answer, the marked answer would be C and D, but this cannot be justified without the missing compounds.