Four phrases/ sentences have been removed from the text below. For each question, mark the letter A, B, C or D on your answer sheet to indicate the correct option that best fits each of the numbered blanks from 37 to 40.

There are differences in terms of food habits between past and present lifestyles. People used to grow food like fruits, vegetables, and cereal. (37) _________. They always had fresh food. Their diet contained a lot of vegetables and fruits. They were, therefore, healthier and didn't need much extra exercise because their daily work kept their bodies running. (38) _________, especially those related to their digestive system.

At present, technology has turned agriculture into mass production. Pesticides are used to assure fruitful crops. People keep their food in the fridge for some days or weeks before using it. Ready-made food at markets uses preservatives to keep it longer. People eat more spicy fried food. (39) _________. Although many people find it convenient, (40) _________.  As a result, people now are less healthy and suffer from more diseases.

A. it leads to many health conditions

B. They had few diseases

C. They raised fish in ponds and livestock on farms

D. Fast food is another major factor in modern food habits

People used to grow food like fruits, vegetables, and cereal. (37) _________.