Answer:
D. Block
Explanation:
Semantic HTML or semantic markup is HTML that introduces meaning to the web page rather than just presentation. For example, a <p> tag indicates that the enclosed text is a paragraph. This is both semantic and presentational because people know what paragraphs are, and browsers know how to display them.
The area where a blast originate from is referred to as PERIMETER. After a bomb blast incident, the first responders has to map out a safe pre-blast perimeter based on the requirements of Bureau of Alcohol, Tobacco, Firearms and Explosives [BATFE]. After this, the first inner perimeter, also called hot zone must be established. This is where the blast originated from and it is the point where victims rescue and treatment will start.
