Following is an example of
`CH_(2)=CH-overset(O)overset(||)CHharroverset(o+)CH_(2)-CH=overset(O^(-))overset("| ")C-Hharr.^(-)CH_(2)=CH-overset(O^(-))overset("| ")underset(o+)"C "-H`

Options

A. hyperconjuhation
B. tautomerism
C. resonance
D. inductive effect.

Answer

To solve the question regarding the given organic compound, we need to determine which of the listed effects (hyperconjugation, tautomerism, resonance, or inductive effect) is exemplified by the structure provided.

### Step-by-step Solution:

1. **Identify the Structure**:
The structure provided in the question involves carbon-carbon double bonds and carbon-oxygen double bonds. This suggests that we are dealing with a compound that has multiple functional groups and potentially multiple resonance forms.

**Hint**: Look for double bonds and functional groups in the structure.

2. **Understand Hyperconjugation**:
Hyperconjugation involves the interaction of electrons in sigma bonds (C-H or C-C) with adjacent empty or filled p orbitals or pi bonds. This effect generally stabilizes the molecule but is not primarily responsible for the behavior of the compound in question.

**Hint**: Hyperconjugation is related to sigma bonds and does not involve the movement of pi electrons.

3. **Understand Tautomerism**:
Tautomerism is a phenomenon where a compound exists in two or more interconvertible forms, typically involving the relocation of a hydrogen atom and a shift in the position of a double bond. However, the structure given does not indicate a simple keto-enol type tautomerism.

**Hint**: Tautomerism involves a shift of hydrogen and double bonds, typically between two forms.

4. **Understand Resonance**:
Resonance involves the delocalization of pi electrons across adjacent atoms, allowing for multiple valid Lewis structures. In the given structure, we can see that the presence of double bonds (C=C and C=O) allows for the movement of electrons, leading to different resonance forms.

**Hint**: Look for the delocalization of electrons and multiple valid structures.

5. **Understand Inductive Effect**:
The inductive effect refers to the polarization of sigma bonds due to electronegative atoms or groups. While this effect can influence the stability of a molecule, it does not involve the delocalization of electrons like resonance does.

**Hint**: The inductive effect is about electron density shifting due to electronegativity, not about resonance structures.

6. **Conclusion**:
Based on the analysis, the correct answer is **resonance**. The structure can exhibit resonance due to the presence of pi bonds and the ability to shift electrons, which stabilizes the molecule through delocalization.

**Final Answer**: The correct option is **resonance**.