Which of the following is an obstacle that may impede effective communication?

The correct choice identifies "Communication Barrier" as an obstacle that may impede effective communication. A communication barrier refers to any factor that disrupts or prevents the straightforward exchange of messages between individuals or groups. This can include physical barriers, such as distance or noise, psychological barriers like preconceived notions or emotional states, and linguistic barriers stemming from language differences or jargon. Recognizing these barriers is crucial for effective communication, as they can distort the intended message, lead to misunderstandings, and ultimately hinder the ability to connect with others.

In contrast, the other options focus on elements that facilitate communication rather than hinder it. A communication strategy outlines how to communicate effectively, while communication channels refer to the mediums through which messages are transmitted, such as email, face-to-face, or telephone. Communication techniques are the specific methods employed to convey messages effectively, such as active listening or the use of visual aids. These elements are designed to enhance and improve communication rather than create obstacles.