The botanical name of deadly nightshade is:

Explanation

The correct answer is Atropa belladonna, which is the scientific name for deadly nightshade. This plant is part of the Solanaceae family, known for containing potent alkaloids such as atropine. The berries and foliage are highly toxic and can be fatal if ingested.Taxus baccata refers to the yew tree, which is toxic due to taxine alkaloids but is not related to the nightshade family.Narcissus spp. are daffodils, which are not poisonous in the same way and are unrelated to the nightshade family.The option 'Both (a) & (b)' is incorrect as it combines two distinct plants that are not both deadly nightshade.