Find the odd taste option (basic tastes vs absence of taste): Select the item that denotes no taste rather than a basic taste quality.

Introduction / Context:
Human gustation recognizes basic taste qualities (commonly sweet, sour, salty, bitter, umami). “Tasteless” denotes the absence of detectable taste, not a taste quality itself, providing a crisp classification boundary.

Given Data / Assumptions:

• Sweet: basic taste.
• Sour: basic taste.
• Salty: basic taste.
• Tasteless: absence/minimal perception of taste.

Concept / Approach:
Differentiate “taste category” from “lack of taste.” The latter does not fit within the taxonomy of basic tastes and therefore stands apart.

Step-by-Step Solution:

Verification / Alternative check:
Try substitution: “This soup tastes tasteless” reports lack of flavor, while “tastes sweet/sour/salty” reports a specific taste.

Why Other Options Are Wrong:
They are canonical taste qualities and belong to one semantic class.

Common Pitfalls:
Do not mix “bland” (low intensity) with “tasteless” (no taste perceived); the question contrasts category vs absence.

Final Answer:
Tasteless