Step 1: Identify unique species names, Bombay locust = Cyrtacanthacris tatarica, Rocky Mountain locust = Melanoplus spretus.
Step 2: Fix D-(IV) since Melanoplus spretus is the Rocky Mountain locust.
Step 3: Match remaining pairs, Brown locust to (III) and Australian locust to (II).
Correct option: A-(I), B-(III), C-(II), D-(IV).