Homonyms, synonyms, and antonyms are used to teach what concept?

The correct answer is C, as homonyms, synonyms, and antonyms are integral parts of semantics, which deals with the meaning of words and their relationships. By exploring homonyms (words that sound alike but have different meanings), synonyms (words with similar meanings), and antonyms (words with opposite meanings), learners gain a deeper understanding of how language conveys meaning. This understanding helps students to grasp the nuances of vocabulary and to develop their skills in comprehending and using language effectively.

In contrast, phonics focuses on the relationship between sounds and letters, grammar pertains to the structure and rules of language, and syllabication involves breaking words down into syllables. None of these directly engage with the concept of word meaning in the way that semantics does.