Which definition best matches the word conduct?

• A. to carry out a task
• B. to perform or orchestrate a musical piece
• C. to measure or test something
• D. to lead or guide

Answer: (D)

Conduct means directing or guiding the course of an activity or behavior. The best match here is to lead or guide, because conduct is commonly used to describe directing a group or process, such as a manager guiding a project or a conductor directing an orchestra. This sense of steering the action fits broadly and clearly across contexts. The idea of performing or orchestrating a musical piece sounds related, since a conductor leads a performance, but it emphasizes the act of directing the music rather than the broader act of guiding the process. Carrying out a task can appear in phrases like conduct an experiment, but it doesn’t convey the stronger notion of directing or supervising. Measuring or testing something describes a different action altogether.