In the given question, a short passage is given with one of the lines in the passage missing and represented by a blank. Select the best out of the five answer choices given, to make the passage complete and coherent. 

A diet may work for one but not for others due to different body metabolism and BMR. The best way of going on any such diets is under the supervision of a qualified dietitian or nutritionist _______ any deficiencies in the body. Another important part is that once someone follows such diets, one needs guidance on how to maintain the weight loss happened with these diets and also how to make clean eating a lifestyle modification and not a temporary change just to achieve the desired target.