Please say me the answer fast and correct. ​

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

Is a positive integer raised to a negative power always positive

Find the value. a. 0.003 b. 0.03 c. 0.3 d. 3