Why the other options are wrong:

• Childhood obesity had doubled.: Doubling means two-fold, whereas the doctor says triple.
• There was an increase in obesity among the children.: A general increase does not specify the factor requested. The stated factor is three.
• Children were prone to many diseases due to overweight.: Diseases caused by excess weight do not specify the factor by which obesity increased.

Correct Answer: Children were weighing up to 600 pounds.

Why this is correct: The interviewer repeats the figure of 600 pounds and asks whether the person was under eighteen. These questions show surprise at that weight in a child.

Why the other options are wrong:

• Childhood obesity had increased.: The repeated questions focus on 600 pounds and being under eighteen, rather than a general increase in obesity.
• There was an increase of 5-10 pounds in teenager's weight.: The figure prompting surprise is 600 pounds rather than a small weight gain.
• Youngsters were becoming overweight.: The surprise concerns the extreme weight in a child rather than young people being overweight in general.

Correct Answer: On the laundry weighing machine in the basement.

Why this is correct: The children were taken to the basement and weighed on the laundry scale.

Why the other options are wrong:

• On the regular weighing machine outside the laboratory.: The source names a laundry scale in the basement rather than a regular scale outside a laboratory.
• On the special weighing machine in a laboratory.: The named scale is a laundry scale rather than a special laboratory machine.
• On a specialised weighing machine in the lab.: The children were weighed on a laundry scale in the basement rather than a specialised laboratory scale.

Correct Answer: They were above 400 pounds.

Why this is correct: The children described as needing the laundry scale weighed over 400 pounds.

Why the other options are wrong:

• It was not possible to know about their exact weight.: Not knowing the exact weight explains the measurement problem, rather than identifying the specified group of children.
• They did not have the machine to weigh them.: The source describes using a laundry scale, rather than having no weighing machine at all.
• Traditional scales were not working effectively.: Scale limitations are part of the measurement context, rather than the weight threshold identifying these children.

Correct Answer: If the obesity is intervened in childhood.

Why this is correct: The quoted low chance of remaining obese applies when intervention occurs during infancy.

Why the other options are wrong:

• If they start exercising regularly.: Exercise alone is not the specific condition stated with the 20 to 25 percent figure.
• If the parents give healthy diet to them.: A healthy diet alone is not the specific condition stated with that figure.
• If they become obese after a certain age.: The figure concerns an obese infant receiving intervention, rather than obesity beginning at a later age.

Correct Answer: As the age increases, there are more chances of remaining obese.

Why this is correct: The speaker says becoming obese at a later age increases the chance of remaining obese as an adult.

Why the other options are wrong:

• The chances of remaining fat increases at young age.: The source says later age raises persistence, rather than younger age.
• Youngsters can lose obesity if attended to immediately.: The statement compares persistence by age, rather than guaranteeing weight loss after immediate treatment.
• Obesity can be reduced with the help of technology.: Technology is not the conclusion described; persistence increases with later onset.