Which of the following act does not provide protection to consumers?

None of the above

All the given Acts provide protection to consumers. Thus, the correct answer is Option 4: None of the above.

Legal Protection to Consumers: The Indian legal framework consists of a number of regulations which provide protection to consumers. These include (i) The Consumer Protection Act, 1986, (ii) The Indian Contract Act, 1872, (iii) The Sale of Goods Act, 1930, (iv) The Essential Commodities Act,1955, (v) The Agricultural Produce (Grading and Marking) Act, 1937, (vi) The Prevention of Food Adulteration Act, 1954, (vii) The Standards of Weights and Measures Act, 1976, (viii) The Trade Marks Act, 1999, (ix) The Competition Act, 2002, (x) The Bureau of Indian Standards Act, 1986.
Thus all of the options provide protection to consumers.