Concept:OPEC was founded in
1960 by five oil-producing countries.
Explanation:The founding members of OPEC are Iran, Iraq, Kuwait, Saudi Arabia, and Venezuela.
These five countries created the organization in September
1960.
Therefore, among the options given, Venezuela is the founding member of OPEC.
Indonesia, Algeria, and Nigeria joined OPEC later and are not founding members.
Answer:Venezuela (Option C).