To find the correct match, let us analyze the meaning of each communication barrier:

• Semantic barrier (A): 'Semantic' refers to the meaning of language, words, or symbols. Therefore, misunderstanding the meaning of a word (2) is a classic example of a semantic barrier.
• Cognitive barrier (B): 'Cognitive' relates to mental processes such as thinking, understanding, and memory. Information overload (4) overwhelms an individual's mental processing capacity, making it a cognitive barrier.
• Organisational barrier (C): These barriers arise from the structure, rules, policies, and culture of a workplace. A lack of feedback (1) is an organisational barrier because it typically stems from poor communication channels or rigid hierarchical structures within an organisation.
• Affective barrier (D): 'Affective' refers to emotions, feelings, and attitudes. Fear of social stigma (3) is an emotional response that prevents a person from communicating openly, making it an affective barrier.

Matching these gives A-2, B-4, C-1, D-3, which corresponds to Option D.