In the cladogram shown,the animals across the top are a lancelet,lamprey,salmon,lizard,and rabbit (from left to right) .If the salmon,lizard,and rabbit are an ingroup,which animals would be an outgroup and which characteristics are necessary to be in the ingroup? 
Definitions:
Grand Canyon
A massive, steep-sided canyon carved by the Colorado River in the state of Arizona, USA, renowned for its stunning landscapes and geological significance.
Theodore Roosevelt
The 26th President of the United States (1901-1909), known for his progressive policies, conservation efforts, and key role in negotiating the end of the Russo-Japanese War.
Robert La Follette
An American politician and reformer, known for his role as a leader of the Progressive Movement and his efforts to fight corporate power and corruption.
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