The answer is D. limited.
A full warranty is a warranty that covers all parts and labor for a specified period of time. A limited warranty is a warranty that covers only certain parts or labor, or for a shorter period of time.
In a limited warranty, the warrantor limits the scope of a full warranty in some way. For example, the warrantor may limit the warranty to only cover defects in materials and workmanship, or to only cover defects that occur during the first year after purchase. The warrantor may also limit the warranty to only cover defects that occur under normal use and wear.
A limited warranty is not as good as a full warranty, but it may be the only type of warranty that is available for a particular product. If you are considering buying a product with a limited warranty, you should carefully read the terms of the warranty to make sure that you understand what is covered and what is not covered.