Option (1) is correct: Section 6 of Indian Partnership Act defines that in determining whether a group of persons is or is not a firm, or whether a person is or is not a partner in a firm, regard shall be given to the real relation between the parties.
Option (2) is incorrect: Agency is a contract between two persons, in which one person is Principal and other is Agent.
Option (3) is incorrect: Every partner is an agent of firm defined u/s 18 of Indian Partnership Act.
Option (4) is incorrect: Partners in a partnership firm may be active partner and sleeping partner both.