In basic ethics and moral philosophy, a general conception or organised system of ideas about what is right and what is wrong behaviour is known as what?

Introduction / Context:
Every society and individual operates with some idea of what counts as right or wrong behaviour. In philosophy and social science, there are specific terms used to describe these ideas. This question focuses on the basic ethical concept that deals with a general conception of right and wrong. Understanding this term is important because it helps distinguish between moral rules, legal rules, social customs and everyday manners.

Given Data / Assumptions:

• The question asks for a term in ethics and moral philosophy.
• It refers to a general conception of right and wrong behaviour.
• We have four options: morality, legality, etiquette and custom.
• We assume a standard introduction level understanding of ethics used in school and college curricula.

Concept / Approach:
To answer, we need to recognise that morality is the term used for values and principles that guide decisions about right and wrong. Legality refers to what is permitted or prohibited by law, which may not always match moral views. Etiquette refers to polite behaviour and manners in social situations. Custom describes traditional or habitual practices in a community. Among these, the term that best fits a broad conception of right and wrong behaviour is morality.

Step-by-Step Solution:
Step 1: Recall that moral philosophy, also called ethics, studies questions about right and wrong, good and bad, and what people ought to do. Step 2: Identify the term morality as referring to the system of moral principles and values that guides individual and group behaviour. Step 3: Examine legality, which is related only to laws created by a state. Some acts may be legal but still considered immoral or morally questionable. Step 4: Examine etiquette, which covers rules of politeness, such as table manners or how to greet people, and does not fully capture deep questions of right and wrong. Step 5: Examine custom, which refers to traditional ways of doing things but may or may not be seen as morally right. Step 6: Conclude that the best term for a conception of right and wrong behaviour is morality.

Verification / Alternative check:
Consulting any basic ethics textbook or a dictionary will confirm that morality is defined as principles concerning the distinction between right and wrong or good and bad behaviour. These sources will also clarify that law, etiquette and custom are related but distinct areas. While laws may reflect moral views, they are not the same thing. Etiquette and custom can vary widely and may sometimes conflict with moral principles, which further proves that morality is the correct choice.

Why Other Options Are Wrong:
Legality simply refers to whether an action is allowed or forbidden by law, not whether it is morally right. Etiquette concerns proper manners and social niceties, which are narrower and more superficial than moral principles. Custom is about traditional practices, which may be followed for cultural reasons even when they are questioned morally.

Therefore, none of these alternatives fully captures the broad idea of right and wrong behaviour that the question is asking about.

Common Pitfalls:
Students sometimes confuse what is legal with what is moral, forgetting that laws can be unjust or incomplete. Others think that following customs or etiquette always means doing the right thing, when in reality customs change over time and manners differ between cultures. To avoid these errors, always remember that morality directly addresses ethical rightness and wrongness, whereas law, etiquette and custom are narrower or different categories.

Final Answer:
The general conception of right and wrong behaviour is called morality.