What may happen if a hard pencil is repeatedly pressed over a dark value?

Correct answer: The graphite may become compressed and shiny

The governing concept is pressure control and graphite burnishing. Repeatedly pressing a hard pencil over an already dark value compresses the graphite and can flatten the paper’s surface grain. The area may then develop a smooth, shiny appearance, so option C is correct. The shadow does not disappear, and extra pressure cannot create a true highlight; it usually reduces the surface’s ability to accept later layers. Dark values should be built gradually.