Verification of truth – "Bargaining always comprises ____." Choose the essential element.

Introduction / Context:
Bargaining is a negotiation process to reach mutual agreement. The question asks for the element inherent to bargaining.

Given Data / Assumptions:

• We consider core features of negotiation: proposals, concessions, counter-offers.
• We must avoid importing subjective moral labels (e.g., generosity, baseness).

Concept / Approach:
At its core, bargaining entails reciprocal concessions—each side offers something and expects something in return, i.e., “give and take.”

Step-by-Step Solution:

Verification / Alternative check:
Whether in markets, labor talks, or daily life, bargaining without reciprocal movement is mere dictation, not negotiation.

Why Other Options Are Wrong:
Generosity may occur, but is not required. Baseness is a value judgment, not intrinsic. Costliness is incidental, not definitional.

Common Pitfalls:
Confusing typical haggling tone with the logical structure of bargaining.

Final Answer:
Give and take