Explanation:

- The Indian High Courts Act was enacted by the British Parliament. It aimed to establish High Courts in different regions of India.

- Option 1: 1909

- This option refers to the Morley-Minto Reforms or the Indian Councils Act of 1909. It relates to the introduction of reforms in the council, not the establishment of High Courts.

- Option 2: 1911

- This year does not align with any significant judicial act concerning the establishment of these High Courts.

- Option 3: 1861

- The Indian High Courts Act of 1861 was the legislation that authorized establishing High Courts in Calcutta, Madras, and Bombay.

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- Option 4: 1865

- This year does not correspond to the enactment of the Indian High Courts Act.

Thus, Option 3: 1861 is indeed the correct answer.