Explanation:

The correct answer is option A, which states that in the (i) condition, both male and female flowers are borne on the same plant, and an example of such plants is (ii) cucurbit.

(i) Monoecious and Dioecious:
- Monoecious refers to a plant species that has separate male and female flowers on the same plant.
- Dioecious refers to a plant species that has male and female flowers on separate plants.

(ii) Cucurbit and Papaya:
- Cucurbit is a plant family that includes various species such as cucumber, pumpkin, squash, and melons.
- Papaya is a tropical fruit-bearing plant that belongs to the Caricaceae family.

Answer Analysis:
- Option A states that the (i) condition is monoecious, which means that the plant has both male and female flowers on the same plant.
- Option A also states that the example of such plants is cucurbit, which is a plant family that includes various species with monoecious characteristics.
- Therefore, option A is the correct answer.

- Option B states that the (i) condition is monoecious, but the example of such plants is papaya. However, papaya is actually a dioecious plant, as it has separate male and female flowers on different plants. Hence, option B is incorrect.

- Option C states that the (i) condition is dioecious, which means that the plant has male and female flowers on separate plants. This contradicts the given information, which states that both male and female flowers are borne on the same plant. Therefore, option C is incorrect.

- Option D states that the (i) condition is dioecious, and the example of such plants is papaya. While papaya is indeed a dioecious plant, the given condition specifies that both male and female flowers are borne on the same plant, which is not true for papaya. Hence, option D is incorrect.

Conclusion:
Based on the given information, the correct answer is option A, which states that in the (i) condition, both male and female flowers are borne on the same plant, and an example of such plants is cucurbit.