The correct choice is (c) <xmp>
Easy explanation: HTML <strike> element places horizontal line through text. <spacer> is an obsolete HTML element. It allows insertion of empty spaces on pages. HTML Example Element <xmp> renders text between start and end tags without interpreting HTML in between and using monospaced font. HTML2 specification recommended that it should be rendered wide enough to allow 80 characters per line. <shadow> element is an obsolete part of web component which is used to shadow DOM objects.