Based on the available information the prominent tendencies that are used to define primates, according to Le Gros Clark, are arboreal adaptation, dietary plasticity, and parental investment.
Arboreal adaptation is a form of a physical trait that allows the organism to live in trees;
Dietary plasticity is a form of flexible diet in adapting to a specific setting.
Parental investment is the extent and strength parents use for their child's benefit.
Sir Wilfred E. Le Gros Clark was generally known for being a primatologist who made huge strides in studying human evolution.
Hence, in this case, it is concluded that Sir Wilfred E. Le Gros Clark makes three prominent tendencies.
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