Conclusion:
The proportion of people over the age of fifty in the workforce has increased in recent yearsSimplify the conclusion as follows:
Workforce with people over 50 yrs --> (W50+)
Total workforce (other age groups also) --> (Wtotal)
Now conclusion says:
(W50+)/(Wtotal) has increased!
With this in mind, let us look at the premises.
Both prems say that the PERCENTAGES (of men and women) have gone up (we don't really know the base values to figure out whether the actual NUMBER has gone up).
Clearly, we see that the numerator (W50+) is changing, but don't know what is going on in the denominator.
To evaluate this, let us look for an answer option which gives us this data.
A) Close one, but incorrect. This gives data of people who are NOT employed (pause and understand that employed + unemployed is NOT equal to our denominator - Wtotal). We want to know the proportion of employed who are above 50yrs. So our denominator requires the entire sample space i.e, the total number of
employed people across all age groups.
B) talks about the % of women alone. This is of no use whatsoever.
C) Older or younger who are EMPLOYED! This is exactly what we are looking for! This is the right choice.
D) Talks about men alone ! Not sure whether they are employed or not. Anyways, this is ruled out. Doesn't cover our entire sample space
E) Similar to D, but info is about women. Easily rule this one out.
C wins!
Make sure to clearly understand how A is different from C and what data each of those is really giving.
Hope this helps