Why the answer is B, and why the others tempt you.
**The reasoning**
A synonym is a word with the **same or nearly the same meaning** as another word.
CONCEAL means to **keep something hidden or secret** — to prevent others from seeing, knowing, or discovering it. For example: "He tried to conceal his nervousness during the interview."
HIDE carries this exact meaning — to put or keep something out of sight or to prevent discovery. "She hid the gift under the bed" = "She concealed the gift under the bed."
**Why the wrong options tempt you**
- **Reveal, Open, and Lift** are all **antonyms** (opposites) of conceal, not synonyms. They all suggest making something visible or known.
- Students often confuse synonym questions with antonym questions when reading quickly under exam pressure.
- "Reveal" is especially tricky because it's the most common opposite of conceal, and your brain might jump to it if you're thinking "what word relates to conceal?" instead of "what word *means* conceal?"
**Quick takeaway**
When you conceal something, you **hide** it from view — they're the same action, just different words. Always confirm whether the question asks for "synonym" (same) or "antonym" (opposite) before answering!
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