Manages tribal council meetings.
a.
the chairman or president of the tribe
b.
the vice president or an elected speaker
c.
a congressionally-appointed speaker
d.
a federal court judge

The vice president/ elected speaker manages the tribal council meetings

B

Explanation

The Tribal Council of meetings where tribal representatives come together to discuss the matters associated with certain tribes so as to improve the welfare of tribes.

Depending on each tribe, the councils are being held.

The major tribal councils in US are  

·Great Lakes Inter-Tribal Council

·Inter-Tribal Council of Arizona, Inc.

·Inter-tribal Council of Michigan

·Minnesota Indian Affairs Council

·Navajo Nation Council

·Siletz Tribal Council

·Williams-burg Tribal Council

no the answer is c only objects touching the earth's surface can be acted upon by an outside force