The central teaching of he qur’an is that a. there is only one god b. humanity is the key to life c. daily prayers are required d. muhammad is the last prophet

A- There is only one God.

It is to worship Allah (God in English and same God worshiped in Christianity and Judaism) as one and only one God with no partner, no son, no father, no companion, no associate, and no equivalence. The central teaching of the Qur'an is Tawhid , which means the Oneness of God.  

observing traffic laws in exchange for driving on the highway.

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.