Consider the following fruits: [Modern History]

I. Papaya

II. Pineapple

III. Guava

How many of the above were introduced in India by the Portuguese in the sixteenth and seventeenth centuries?

The correct option is All the three.

To understand why all three fruits—Papaya, Pineapple, and Guava—were introduced to India by the Portuguese in the sixteenth and seventeenth centuries, we can examine their historical origins and trade routes:
1. Papaya (Carica papaya): Native to Mesoamerica (specifically southern Mexico and Central America), the papaya was carried by the Spanish and Portuguese across the Pacific and Atlantic. Portuguese traders introduced it to India in the 16th century, where it quickly adapted to the tropical climate.
2. Pineapple (Ananas comosus): Originating in the tropical regions of South America (between southern Brazil and Paraguay), the pineapple was spread by European explorers. The Portuguese brought pineapple plants to India (specifically landing in Goa) around 1548.
3. Guava (Psidium guajava): Native to the Caribbean, Central America, and South America, guava was also distributed globally by the Portuguese and Spanish. Portuguese mariners introduced guava to India during the 16th century, and it became widely cultivated across the subcontinent during the 17th century.

Since all three fruits listed (Papaya, Pineapple, and Guava) were brought to India from the Americas by Portuguese traders during this period, the correct answer is indeed "All the three".