Step 1: Understand the source of cloves.
Cloves are obtained from the dried flower buds of the clove tree, Syzygium aromaticum. These buds are harvested before they bloom.
Step 2: Review the options.
- Clove is obtained from the bud, not the flower, fruit, or seed.
- The flower blooms after the bud is harvested to be dried and used as the spice clove.
Step 3: Conclude.
Cloves come from the bud of the clove tree, making option (B) the correct answer.
Final Answer:
\[
\boxed{\text{Bud}}
\]