Answer:
1)Sectional interest groups
a) They seek to promote the interests of a particular section or a group of society. b)Their principal concern is the betterment of their members.
c)For eg: FEDECOR.
2)Public interest groups
a)They promote collective rather than
selective goods. b)They aim to help groups rather than their
members.
c)For eg:BAMCEF.
3)Movement groups
a)They attempt to bring changes in social order.
b)They seek to achieve a single objective within a limited time and aboard goal in a very long term.
c)For eg: Narmada Bachao Andolan.