Option (b) Filtration is the answer.
- Filtration is one of the methods which is used for separating the liquid components from the solid components.
- Sieving is used for separating large particles from solid components.
- As tea leaves are a solid component for separating tea leaves from the tea, and tea is a liquid component, filtration is used.
- To remove impurities or harmful components, the filtration method is better than the decantation method. Therefore, option (b) is the answer.