How can the relationship between principal and agent arise?

The relationship between principal and agent primarily arises through three mechanisms: agreement, ratification, and necessity.

Agreement is foundational; it refers to the explicit or implicit contract formed when one party (the principal) authorizes another party (the agent) to act on their behalf in business dealings. This consent can be communicated verbally, in writing, or inferred from conduct.

Ratification occurs when a principal approves a previously unauthorized act carried out by an agent. This retroactive validation transforms the unauthorized action into an approved one, effectively establishing the principal-agent relationship post-facto.

Finally, necessity refers to situations where an agent must act to protect the principal's interests, even in the absence of a prior agreement. This can arise in emergencies where waiting for the principal's approval could result in loss or damage.

The other options do not align with the traditional principles governing agency relationships. Speculation, extension, and remittance do not accurately describe the establishment of principal-agent relationships in legal terms. Thus, the correct answer encapsulates the recognized foundations of how such relationships are formed.