Which of the following can be inferred … | [국회직 8급 영어] 23년 1회차 기출문제 상세 페이지

Which of the following can be inferred from the passage?
Obesity represents the most serious health problem in the United States today. Almost 60 percent of adults in the US are either overweight or obese. This is not just a problem of appearance. Obesity often leads to serious health problems such as diabetes, heart attacks, high blood pressure, and even some forms of cancer.
Medical professionals typically define obesity using the Body Mass Index (BMI). BMI can easily be calculated through dividing a person’s weight in kilograms by the square of the person’s height in meters. A normal or healthy BMI would be less than 25. A person with BMI between 25 and 29.9 would be considered overweight. A BMI of 30 to 34.9 is mildly obese, while 35 to 39.9 is substantially obese. People with BMI measures of 40 and over are considered extremely obese.

More than half of Americans have a BMI over 30.

Anyone with a BMI over 30 will develop cancer.

More than 60 percent of Americans do not know their BMI.

Few Americans have a BMI over 35.

A person is usually considered obese if his or her BMI is 30.

지문에서 추론할 수 있는 것은 BMI가 30이면 대체로 비만으로 분류된다는 내용이다.
지문은 "A BMI of 30 to 34.9 is mildly obese"(BMI 30~34.9는 경도 비만)라고 하므로, 30은 비만 구간의 시작에 해당한다.
"More than half of Americans have a BMI over 30."은 틀리다. 약 60%는 과체중과 비만을 합친 수치여서 BMI 30 초과 비율로 볼 수 없다.
"Anyone with a BMI over 30 will develop cancer."는 틀리다. 지문은 "often"(흔히)과 "some forms of cancer"(일부 암)라고만 한다.
"More than 60 percent of Americans do not know their BMI."는 지문에 근거가 없다.
"Few Americans have a BMI over 35."는 BMI 구간별 인구 비율을 밝히지 않은 지문에서 끌어낼 수 없다.