Select the option that expresses the opposite meaning of
the underlined word.

In front of the big screen, this behaviour is generally
considered taboo.

The correct option is Acceptable.

Step-by-step Explanation:
1. Understand the meaning of the word: The word taboo refers to a practice, behavior, or subject that is forbidden, prohibited, or restricted by social custom or law. In the context of the sentence, it refers to behavior that is disapproved of or considered socially improper.
2. Analyze the options to find the opposite (antonym):
- Prescription: An instruction, command, or recommendation. It is not an antonym of taboo.
- Obedience: The act of complying with rules, orders, or authority. This does not represent the opposite of a prohibited behavior.
- Promotion: The advancement of a person, product, or cause. This is unrelated to the concept of being forbidden.
- Acceptable: Allowed, welcomed, or socially approved. This is the direct opposite of taboo, which refers to something forbidden or unapproved.
3. Conclusion: Therefore, the option that expresses the opposite meaning of "taboo" is Acceptable.