MadaraU wrote:

P1 :- Regular exercise improves heart health

P2 :- 5 yrs ago, less than 60 yrs old had 50% of total 1 or more heart attack

P3 :- today, less than 60 yrs old have 40% of total 1 or more attack

P4 :- less than 60 yrs people workout more now while 60+ yrs old remain the same

Conclusion :- Workout has helped to reduce these numbers

B) The proportion of the population aged 60 and over has remained constant over the last five years. (This option sounds to me like a assumption rather than strengthner, if we negate it argument will fall apart)

meaning:- proportion was 60+ people was 1/3, its still 1/3 today i.e. if there were 33 (65+ yrs old 5 years ago) out of 99 then today might be 66 out of 198.

D.) People aged 60 and over are generally less capable of strenuous exercise than are people under the age of 60.

Meaning :- if 60+ yrs old people can't put any extra effort into workout hence their numbers are same, while younger than 60 yrs old can hence their heart attack numbers have reduced strengthens the conclusion.

Please let me know what d y'all think about my reasoning, any comments will be appreciated

Hi MadaraU,

I agree with your point of view of looking at this question.

For Option D,

This is out of scope since it is too limited and narrow and only focuses on "strenuous exercise". In this case, we are assuming that any non-strenuous exercise would not result in reduced chances of getting a heart attack, which does not directly comprehend with the argument.

For Option B,

You cannot apply the negation test in this case since it is a Strengthening question. Remember, Negation test is only applied to assumption questions.

Now as you correctly stated in P2 and P3, the percentage of people getting a heart attack under the age of 60 has gone down from 50% to 40%. This means, that now (P3), people over the age of 60 account for 60% of the people getting a heart attack.

As option B states that the proportion of people over 60 has remained the same, yet 60% of them now account for getting a heart attack compared to 50% (5 years ago). Therefore, this directly strengthens the argument.

Using your numbers,

P2- 16 out of 33 people (50%) over the age of 60 were getting a heart attack 5 years ago.

The proportion has remained the same over 5 years.

P3 - 40 out of 66 people (60%) over the age of 60 get a heart attack.

B is the answer

Let me know if this makes sense or if you have any more questions.