The correct answer is (a) Poppy.
Noscapine is an alkaloid found in the opium poppy, Papaver somniferum. It is a cough suppressant that is used to treat dry, non-productive coughs. It is also used to treat asthma and bronchitis. Noscapine is available over-the-counter and by prescription.
Basil is an herb that is used in cooking. It is not known to contain noscapine.
Eucalyptus is a tree that is used to make essential oil. It is not known to contain noscapine.
Ephedra is a plant that is used to make ephedra, a stimulant. It is not known to contain noscapine.
Here is a table that summarizes the information about each option:
| Option | Description |
|—|—|
| Poppy | A plant that is used to make opium. Opium contains noscapine. |
| Basil | An herb that is used in cooking. It is not known to contain noscapine. |
| Eucalyptus | A tree that is used to make essential oil. It is not known to contain noscapine. |
| Ephedra | A plant that is used to make ephedra, a stimulant. It is not known to contain noscapine. |