Concept:
An antonym is a word that has the opposite meaning of another word. Understanding vocabulary and word meanings helps in identifying correct antonyms.
Step 1: Understanding the meaning of "Fragile".
The word "fragile" means easily broken, delicate, or weak.
Step 2: Finding the opposite meaning.
The opposite of something easily broken or delicate is something strong and durable.
Step 3: Evaluating the options.
- Weak $\rightarrow$ similar meaning (incorrect)
- Delicate $\rightarrow$ similar meaning (incorrect)
- Strong $\rightarrow$ opposite meaning (correct)
- Breakable $\rightarrow$ similar meaning (incorrect)