Which shows geometrical isomerism

Options

A.
B.
C.
D.

Explanation

To determine which compound shows geometrical isomerism, we need to understand the conditions necessary for geometrical (cis-trans) isomerism to occur. Geometrical isomerism typically occurs in alkenes where there is restricted rotation around a double bond, and the substituents attached to the double-bonded carbons must be different.

### Step-by-Step Solution:

1. **Identify the Structure**: Look at the molecular structure of the compounds in question. We need to identify if there are any alkenes (C=C) present.

2. **Check for Different Groups**: For geometrical isomerism to occur, each carbon of the double bond must have two different groups attached. This means that if both carbons of the double bond are attached to the same groups, geometrical isomerism cannot occur.

3. **Analyze the Substituents**: If we have a compound with a double bond (C=C) and the substituents are different on each carbon, we can then classify the isomers as either cis (same side) or trans (opposite sides).

4. **Example Analysis**: Consider a compound with the structure C=C with substituents like IBr and CH3. Here, one carbon has an iodine (I) and bromine (Br), while the other has a hydrogen (H) and a methyl group (CH3). Since the groups are different, this compound can exhibit geometrical isomerism.

5. **Conclusion**: If the compound meets the criteria of having a double bond with different substituents on each carbon, it will show geometrical isomerism.

### Final Answer:
The compound that has a C=C double bond with different groups on each carbon will show geometrical isomerism.