As per Pasco and Pilgrim the ancient Indobrahma river discharge its water into:

Question

Accepted Answer

According to Pascoe and Pilgrim, the ancient Indobrahma river discharged its water into the **Bay of Indus**.

Here's why Option 4 is the correct answer, and why the other options are incorrect, based on the premise that Option 4 is indeed the correct answer according to Pascoe and Pilgrim's theory:

*   **Option 4: Bay of Indus (Correct)**: The Indobrahma river, as theorized by Pascoe and Pilgrim, was a massive river system that predated the modern Indus, Ganges, and Brahmaputra rivers. The "Bay of Indus" would have been the logical location for this ancient river to empty into. The very name "Indobrahma" suggests a connection to the Indus region, making a discharge point near the Indus delta a plausible scenario within their hypothesis. The theory posits a large river system flowing in the region of the present-day Indus, so it's reasonable to assume its delta, or "bay," would be its final destination.

*   **Option 1: Bay of Bengal (Incorrect)**: While the Brahmaputra river (part of the name "Indobrahma") currently flows into the Bay of Bengal, the Indobrahma river, as theorized, was a distinct and earlier river system. Pascoe and Pilgrim's theory suggests a different drainage pattern than the current one. Therefore, even though the Brahmaputra now flows into the Bay of Bengal, the ancient Indobrahma, according to their theory, did not.

*   **Option 2: Persian Gulf (Incorrect)**: The Persian Gulf is geographically distant from the Indus region. The Indobrahma river, even as a hypothetical large river system, would have had to traverse a vast and unlikely path to reach the Persian Gulf. There's no geological or geographical evidence within Pascoe and Pilgrim's theory to support such a drainage pattern.

*   **Option 3: Arabian Sea (Incorrect)**: While the Indus River currently flows into the Arabian Sea, the Indobrahma river, as theorized by Pascoe and Pilgrim, was a different river system. The "Bay of Indus" would have been a specific region within the Arabian Sea, closer to the Indus delta. The theory suggests a different, earlier geographical configuration, making the general "Arabian Sea" less specific and therefore less accurate than the "Bay of Indus" as the discharge point.