Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks

Keeping fit and healthy may seem difficult, but there are a few easy-to-follow guidelines. Firstly, a balanced diet ___(1)___ means selecting food that is low in salt and sugar is absolutely essential. Experts recommend reducing the amount of fat in our diet, as too much can ___(2)___ heart problems.
Secondly, it is important to ___(3)___ exercise into our daily routine. This can be done by simply walking as much as possible and climbing stairs instead of taking the lift. Exercise is necessary to maintain a healthy body, as well as increasing energy levels and making you feel generally fitter and happier.
Finally, staying relaxed is ___(4)___ reason for good health. Too much stress can lead to a variety of illnesses, from headaches to high blood pressure. Whenever possible, do thing you enjoy and treat yourself occasionally. ___(5)___, the message is simple – enjoy yourself but learn to respect your body too. It’s all a question of getting a balance right.
(Adapted from FCE Use of English)