Final answer:
The major item of exchange between the Lese and Efe involves the trading of agricultural products and wild game, reflecting their different subsistence strategies.
Step-by-step explanation:
The major item of exchange between the Lese and Efe people typically involves the trading of agricultural products and wild game. The Lese are agriculturalists who clear forest areas to plant crops, while the Efe are foragers who hunt and gather in the Ituri forest of the Democratic Republic of Congo. Because of the differences in their subsistence strategies, a symbiotic relationship has developed between them. The Efe trade the meat and other products of the forest, such as honey and wild yams, to the Lese in exchange for agricultural products like plantains and manioc.