I am generally confused as to of what you are asking. Can you post something so i can see what you need? I just am confused.
Answer:
B. In an area where a glacier has retreated
Explanation:
Primary succession, starts at a lifeless area where it has been affected by lava flood and/or retreated glacier therefore the answer is B.
Answer:
D.Children of congressional leaders.
Explanation:
The leader of the party that owns a majority of seats in either house of Congress or of a state legislature. Elected by their own party councils, majority leaders act as chief spokespersons and tacticians for their parties. The principal functions of a majority leader normally associate to floor duties. The majority leader is the lead speaker for the majority party during floor discussions, exhibits the calendar and supports the president or speaker with program advancement, policy formation, and policy decisions.
Hope this helped you :D