The correct answer is (b). Clove is an afloral bud.
Afloral buds are the unopened flower buds of a plant. They are often used as spices, and have a strong, pungent flavor. Clove is a good example of an afloral bud. It is the unopened flower bud of the clove tree, and is native to Indonesia. Clove is a popular spice in many cuisines, and is also used in traditional medicine.
Cumin (a) is a seed that comes from the Cuminum cyminum plant. It is a popular spice in many cuisines, and is also used in traditional medicine.
Pepper (c) is the dried fruit of the Piper nigrum plant. It is a popular spice in many cuisines, and is also used in traditional medicine.
Turmeric (d) is a rhizome (underground stem) of the Curcuma longa plant. It is a popular spice in many cuisines, and is also used in traditional medicine.