Step 1: Understanding the question.
The question is asking which of the listed ports is located on the eastern coast of India.
Step 2: Analyzing the options.
(A) मुंबई: Mumbai is on the western coast of India.
(B) मामंगांव: This port is also on the western coast.
(C) कांडला: Kandla is located in Gujarat, on the western coast.
(D) पारदीप: Correct — Paradip port is located on the eastern coast of India in Odisha.
Step 3: Conclusion.
The correct answer is (D) पारदीप, as it is situated on the eastern coast of India.