Yes I believe the answer is D it is th only logical one.
Answer:
Eating junk food on a regular basis can lead to an increased risk of obesity and chronic diseases like cardiovascular disease, type 2 diabetes, non-alcoholic fatty liver disease and some cancers. We know Australian's eat too much junk food. 35% of adults' daily energy intake (kilojoules) comes from junk food.
Form a question, develop a hypothesis, make observations, conduct controlled experiments, make predictions, collect data, analyze data, develop a conclusion.