Read the following passage about heart attacks and mark the letter A, B, C, or D on your answer sheet to indicate the option that best fits...

Read the following passage about heart attacks and mark the letter A, B, C, or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 18 to 22.

        Mounting evidence shows that more young adults are experiencing heart problems than in previous decades. Heart attacks occur when blood flow to the heart (18) ____________. One reason is the growing number of lifestyle-related health problems, (19) ____________. Other factors like tobacco, cocaine, marijuana, and alcohol use have been associated with increased risks of heart attack in younger adults too.

The major risk factors—high blood pressure, high cholesterol, diabetes, and obesity—can damage arteries over time. While these conditions may be inherited, (20) ____________ often play a larger role.

        (21) ____________. A recent survey found that 47% of people under 45 don’t believe they’re at risk for heart disease, and one-third of adults wouldn’t confidently recognize heart attack symptoms. Half of 3,500 younger adults with significant risk factors didn’t believe they were at risk before their heart attack occurred. Even fewer said their doctors warned them—especially women.

        Experts say that getting young adults to care about heart health is a unique challenge. (22) ____________. Experts emphasize early prevention, since untreated risk factors lead to worse outcomes over time.

(Adapted from National Geographic)

Question 18. 

        A. is partially or completely blocked                        B. that is partially or completely blocking

        C. is getting a blockage completely                        D. has been incompletely blocked

Question 19. 

A. are almost blaming for poor diet and physical inactivity

B. which includes unhealthy diet and regular exercises

C. largely resulting from poor diet and physical inactivity

D. that mostly refers to poor diet and physical inactivity

Question 20.

A. the unhealthy lifestyle choices kept in childhood

B. unhealthy lifestyle choices starting in childhood

C. people keep unhealthy lifestyle choices in childhood

D. choosing unhealthy lifestyle in childhood

Question 21. 

A. Because of these risks, many young adults remain unaware

B. Being aware of the risk, many young adults are taking risks

C. Despite these risks, many young adults remain unaware

D. There is unawareness among young adults due to these risks

Question 22. 

A. As they are busy with careers and families, this group often overlooks their heart health

B. When they are busy with careers and families, they often neglect their heart’s doctors

C. If this group overlooks their heart health, they are busy with careers and families duties

D. They are so busy with careers and families that this group never overlooks their heart health