The correct option is Commercial transactions.
Explanation
The Harappan civilization produced thousands of seals, typically made of steatite (soft stone), which are square or rectangular in shape. These seals usually feature animal motifs and a line of script. While they hold artistic and likely religious significance, their widespread distribution and context suggest a specific utilitarian purpose.
Analysis of Function:
- Commercial Transactions (Correct): The primary function of the standard Harappan seals was to facilitate long-distance trade. They were used to stamp wet clay applied over the knots of ropes binding bags or packages of goods. This clay impression, known as a sealing, served as a mark of identity and authority. If the sealing remained intact upon arrival, it certified that the goods had not been tampered with during transit.
- Religious Ritual: While seals depict religious iconography (e.g., the Pashupati seal or the Unicorn), and some may have been worn as amulets, the standardization and archaeological context of the majority of seals point to trade administration as their primary function.
- Funerary Offerings: Seals are occasionally found in graves, but they are not primarily classified as funerary objects compared to pottery or ornaments.
- Decorative Art: Although they are masterpieces of miniature art, their production was driven by functional necessity rather than purely aesthetic purposes.
Key Takeaway:
The standard Harappan seals were primarily administrative tools used to authenticate goods and certify the identity of the sender in commercial transactions.