In the Parable of the Persistent Friend (Luke 11:5-8), what does the friend's persistence in asking for bread at midnight primarily illustrate about prayer?

A God is reluctant to answer our prayers and needs to be persuaded. B We should only pray for our physical needs, like food and shelter. C Boldness and persistence in prayer can move God to act on our behalf. D It is impolite to bother God with our requests at inconvenient times.