Final answer:
For four or more awards of the Navy "E", a Gold "E" is used to denote these multiple awards.
Step-by-step explanation:
The first, second, and third award of the Navy "E" are indeed denoted by a Silver "E". For four or more awards, the Navy denotes this by using a Gold "E". Therefore, the correct answer is A) Gold "E". For four or more awards of the Navy "E", a Gold "E" is used to denote these multiple awards.