It appears that they might be labeled "Hidden" in the properties of that file. Right Click on Properties and Uncheckmark Hidden<span />
<span>Best Answer is
(D)</span>
Any<span> materials not protected by copyright, patent laws or trademark are referred to as copyright. Generally, the public owns these works, and anyone is allowed to use public domain works without obtaining permission. There are various common ways that these works may end up arriving in the public domain. One of those ways includes the expiration of copyright. The copyright owner may also fail to follow renewal rules that govern copyright. </span>The copyright owner may as well decide to place his or her works deliberately in the public <span>domain.</span>
