Final answer:
Semantic noise in communication occurs due to language barriers, such as talking with someone who speaks a different language. This type of noise leads to misunderstandings when the shared understanding of language or terms is missing.
Step-by-step explanation:
Semantic noise refers to misunderstandings during communication that arise from ambiguities in language or words that are not mutually understood by the communicator and the recipient. An example of semantic noise would be talking with someone who speaks a different language (option a). This situation highlights the difficulties in conveying messages when a common language or understanding of terms is not present. Options b, c, and d describe different scenarios that could pose communication challenges but do not directly represent semantic noise.