Final answer:
Moses' reaction to God's call to free the Israelites was reluctance and hesitation.
Step-by-step explanation:
Moses' reaction to God's call to free the Israelites was B) Reluctance and hesitation. According to the Bible, when Moses returned from Mt. Sinai, he discovered that the Israelites had constructed a golden calf and were worshipping it, which made him angry and caused him to break the stone tablets that contained the Ten Commandments. This shows his reluctance and hesitation to accept and embrace God's call.