A is incorrect: Semantic ranking does not directly impact storage costs; its function is related to the quality and ordering of search results.

B is incorrect: Semantic ranking focuses on result relevance based on meaning, not specifically on supporting more languages, although it can work across languages.

C is incorrect: While semantic ranking improves relevance, it can sometimes add latency rather than speed up the search due to the computational overhead of language models.

D is correct: Semantic ranking leverages sophisticated language understanding to elevate the most pertinent documents, ensuring they appear prominently at the beginning of the result compilation.