Select the most appropriate one-word substitution for the given group of words. 

An ability to express oneself well in speech.

Oracy

The most appropriate one-word substitution for the given group of words "An ability to express oneself well in speech" is "Oracy."

Explanation of the options:

☀ Verbose: Verbose means using more words than necessary or being overly wordy. It does not specifically refer to the ability to express oneself well in speech.

☀ Versatile: Versatile means having a wide range of skills or abilities. While being versatile may contribute to effective communication, it does not solely focus on the ability to express oneself well in speech.

☀ Speaker: Speaker generally refers to a person who gives a speech or addresses an audience. While speakers are expected to have good communication skills, it does not specifically highlight the ability to express oneself well in speech.

☀ Oracy: Oracy specifically refers to the ability to express oneself fluently and effectively in speech. It emphasizes the skill of communicating orally and encompasses the ability to articulate thoughts, ideas, and emotions effectively.