Final answer:
Lake Lanier's main point of contention is water rights and allocation.
Step-by-step explanation:
The main point of contention over Lake Lanier is d) Water rights and allocation.
Lake Lanier, located in northeastern Georgia, is a reservoir that serves as a major water source for Atlanta and other nearby cities. There are ongoing disputes over the allocation of water rights, as different states and stakeholders have competing interests in the use and distribution of water from the reservoir.