An approach to handle ontology mapping based on techniques that exploit linguistic labels is called 

Solution Statement:

The correct approach to handle ontology mapping based on techniques that exploit linguistic labels is known as "Linguistic methods."

Explanation of Incorrect Options:

1. Statistical Methods:- These methods rely on statistical analysis and probabilistic models to find patterns and relationships within data. They do not specifically focus on the linguistic labels of ontologies.

Example: Using frequency counts, machine learning models, or probabilistic reasoning to infer relationships.

2. Logical Methods: Logical methods use formal logic to derive conclusions and establish relationships. These methods are more concerned with the logical consistency and inferencing rules rather than the linguistic aspects.

Example: Using description logic or first-order logic to reason about ontology concepts.

3. Structural Methods: Structural methods focus on the structure or topology of the ontologies, such as the hierarchy of concepts and their relationships. They do not primarily exploit linguistic labels.

Example: Analyzing the graph structure or tree-like hierarchy of ontology elements.

4. Linguistic Methods: These methods utilize natural language processing techniques to analyze the labels, descriptions, and other textual information associated with ontology elements. They aim to understand and match the semantics conveyed by the linguistic labels.

Example: Techniques like string matching, synonym detection, and semantic similarity measures are used to align ontology concepts based on their linguistic labels.

By understanding the nature and focus of each method, it becomes clear that linguistic methods are the most appropriate for handling ontology mapping when the emphasis is on exploiting linguistic labels.

Hence, the correct answer is "Linguistic methods".