'Agoshito is a callow youth', said the teacher.

1. Analyze the question The question asks for the antonym (opposite) of "callow", which is the underlined word in "Agoshito is a callow youth."

2. Explain the concept "Callow" is an adjective meaning inexperienced, immature, or lacking worldly knowledge, and it is usually used for young people. Example: "The callow recruit had never seen real work before."

So the opposite of "callow" is a word meaning experienced, mature, or seasoned.

3. Work through the options

• A. an ignorant: This is close in meaning to "callow", not opposite. ✗
• B. an experienced: This means having knowledge or skill from long practice. It is the direct opposite of "inexperienced". ✓
• C. an idle: This means lazy or not working. It has no connection to experience. ✗
• D. an organized: This means well-arranged or orderly. It is unrelated. ✗

4. Answer The correct option is B. an experienced.

5. Exam tip Link "callow" to "child-like" or "clueless". A callow person is green, like a fledgling bird, so its opposite is someone seasoned and mature. Also check the article ("an") in the options. It does not decide the answer here, but it reminds you that the options are meant to fill the blank before "youth".