Final answer:
The LIFO method allows for manipulation of net income by reporting lower COGS, resulting in higher net income.
Step-by-step explanation:
The inventory method that makes it possible to manipulate net income is the LIFO method (c). LIFO stands for Last-In, First-Out, and it assumes that the most recently acquired inventory items are sold first. By using the LIFO method, a company can report lower cost of goods sold (COGS), leading to higher net income. This can be advantageous for tax purposes or to portray a better financial position.