Option (1) is incorrect: Members of HUF cannot be partners as per Sections 5 and 6.
Option (2) is incorrect: Burmese Buddhist husband and wife cannot be partners as per Sections 5 and 6.
Option (3) is correct: A minor can be partner if the other partners are major in a running business.
All others mentioned cannot be partners as per Sections 5 and 6.
Option (4) is incorrect: Widow of deceased partner receiving annuity cannot be partner as per Sections 5 and 6.