A passage is given below with five blanks labelled (A)-(E). Below the passage, five options are given for each blank. Choose the word that fits each blank most appropriately in the context of the passage, and mark the corresponding answer.

The population change ___(A)___ to the change in the number of people during a specific time. The world population has not been stable. It has increased ___(B)___. This is actually due to changes in the number of births and deaths. For an extremely long period of human history, until the 1800s, the world’s population grew ___(C)___ and slowly. Large numbers of babies were born, but they died early too. This was as there were no ___(D)___ health facilities. Sufficient food was not available for all the people. Farmers were not able to produce enough to ___(E)___ the food requirements of all the people. As a result, the total increase in population was very low.