In the U.S. Aids to Navigation System on the Western Rivers, the light characteristic of group flashing (2) is used for lights on __________.

Correct Answer: Option C — the left descending bank

Under the Western Rivers System (33 CFR 62.51), lights on the left descending bank (LDB) display a group flashing (2) characteristic, showing green or white lights. This distinct flashing pattern helps mariners identify their position relative to the river banks.