A person who speaks or supports an idea
A
Pioneer
B
Adviser
C
Advocate
D
Ideologist
Correct Answer: Advocate
One word substitute is Advocate.Pioneer: a person who is among the first to explore or settle a new country or area.
Adviser: a person who gives advice in a particular field.
Advocate: a person who publicly supports or recommends a particular cause or policy.
Ideologist: someone who develops or supports a particular ideology.
