The correct option is (b) 2 only.
Explanation
The seals of the Indus Valley Civilization are considered the most distinctive artefacts of the period. They were primarily used for commercial purposes, such as sealing shipments, and also served as amulets or identity markers. Most seals were made of steatite (a soft river stone).
Statement 1 is Incorrect:
While Harappan seals have been found in various shapes-including rectangular, circular, and cylindrical-the standard and most common shape was square. The square seals typically featured an animal motif and an inscription. Rectangular seals were also found (particularly at Harappa), but they were less common than the square variety and usually contained only script without animal motifs.
Statement 2 is Correct:
The standard Harappan seal usually featured a realistic carving of an animal along with a line of script. Common animal motifs included the "unicorn" (the most frequently depicted animal), humped bull, rhinoceros, tiger, elephant, and buffalo. These carvings are notable for their naturalism and detail.
Key Takeaway:
The quintessential Harappan seal is square-shaped, made of steatite, and features an animal motif accompanied by signs in the undeciphered Harappan script.