In this section an underlined word has been used variously in three sentences S1, S2 and S3. You are required to determine in how many sentences has the word been used correctly. S1: The cuneiform pattern in the arch of the temples give them a grand appearance. S2: Cuneiform literally means wedge-shaped, and is an ancient form of writing on clay. S3: Cuneiform-shaped geographical features across the desert bear the mark of vigorous wind erosion.

Cuneiform means 'wedge-shaped' and refers both to the ancient Mesopotamian writing system using wedge-shaped marks and, more generally, to anything wedge-shaped. In S1, a cuneiform (wedge-shaped) pattern in an arch is a valid descriptive use. In S2, the literal meaning and historical reference to clay tablet writing is the standard correct usage. In S3, cuneiform-shaped geographical features (wedge-shaped formations) is also a legitimate application of the adjective. Therefore the word is used correctly in all three sentences, making the answer (c) 3.