Under the Indian Contract Act, which of the following agreements is expressly declared void under Section 27? 

Section 27 expressly declares that every agreement by which anyone is restrained from exercising a lawful profession, trade, or business of any kind is void to that extent. The only exception is the sale of goodwill, where a buyer may restrain the seller from carrying on a similar business within specified local limits, provided those limits are reasonable having regard to the nature of the business. Indian law on restraint of trade is stricter than English law-there is no 'reasonableness' test for general trade restraints in India (unlike England where partial restraints may be valid). The Supreme Court in Superintendence Company of India v. Krishan Murgai (1980) reiterated that Section 27 makes no distinction between partial and total restraints.