Step 1: Understanding the Question:
The question asks for the fundamental legal principle established by the landmark House of Lords case Donoghue v. Stevenson (1932).
Step 2: Key Principles and Statutory Provisions:
This case is widely regarded as the foundation of the modern law of negligence, establishing the "Neighbour Principle" and the general "Duty of Care".
Step 3: Detailed Explanation and Analysis:
• In Donoghue v. Stevenson, a friend of the plaintiff bought her a bottle of ginger beer.
After drinking some, the plaintiff poured the remaining contents and discovered the decomposed remains of a snail.
She fell ill and sued the manufacturer for negligence.
• The manufacturer argued they owed no duty to the plaintiff because there was no contract between them (the friend had bought the bottle).
• Lord Atkin rejected this argument and established the famous Neighbour Principle:
"You must take reasonable care to avoid acts or omissions which you can reasonably foresee would be likely to injure your neighbour."
• He defined "neighbours" as persons who are so closely and directly affected by my act that I ought reasonably to have them in contemplation.
This established an independent duty of care, separating product liability torts from contract law.
Step 4: Final Answer:
The case represents liability based on the "duty of care to your neighbour", making Option A the correct choice.