Step 1: Understanding standardization marks.
Standardization marks are symbols or certifications given to products to assure consumers that the product meets specific quality and safety standards. These marks help consumers identify genuine and reliable products in the market.
Step 2: Meaning of Hallmark.
A hallmark is a type of standardization mark used particularly for precious metals such as gold and silver. In India, the Bureau of Indian Standards (BIS) provides hallmark certification, which indicates the fineness and purity of gold jewellery.
Step 3: Relationship between Assertion and Reason.
The assertion states that standardization marks ensure quality and purity of a product. The reason explains that the purity of gold jewellery is identified through hallmark certification. Since hallmarking is an example of a standardization mark, the reason correctly supports and explains the assertion.
Step 4: Conclusion.
Therefore, both the Assertion (A) and Reason (R) are true, and the Reason correctly explains the Assertion.
Final Answer: Both (A) and (R) are true and (R) is the correct explanation of (A).