What caused the ancient Hebrew people to leave Canaan for Egypt? drought and famine
war with surrounding areas
the lack of trade opportunities
migration of new settlers to the region

The Israelites have been in Egypt for generations, but now that they have become so numerous, the Pharaoh feared their presence. He feared that one day the Isrealites would revolt against the Egyptians. Gradually and stealthily, he forced them to become his slaves.

Explanation:

The answers are:

1)  In economic terms, what does marginal mean?

 [B]: "extra or additional" .

2)   When should a person proceed with a choice in terms of marginal benefits and cost?

 [C]: "when the benefits outweigh the cost" .

3)  What type of decision is being made when the benefits outweigh the cost?

 [A]:  "rational decision" .

Hope this helps!  

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