What are the inherent benefits and drawbacks of this (essentially two-dimensional singly linked list) backing representation? Discuss with respect to implementation, efficiency, and memory usage in...

What are the inherent benefits and drawbacks of this (essentially two-dimensional singly linked list) backing representation? Discuss with respect to implementation, efficiency, and memory usage in general and as compared to an array-based, a linked list-based, a binary tree-based, and a two dimensional dynamic sequence-based implementation.
(PI 1.2/ABET[1]
, PI 6.1/ABET[6] , PI 6.2/ABET[6])