Critical Reasoning

I m nt good in verbal. esp. when it comes to Critical Reasoning's Inference type questions. I hardly get any question correct. I think I m nt getting it at all. So plz explain me what we hv to do in Inference type questions. What should be my approach? For example in these two questions

Q1. Increase in the level of high-density lipoprotein (HDL) in the human bloodstream lower
bloodstream-cholesterol levels by increasing the body's capacity to rid itself of excess cholesterol. Levels of HDL
in the bloodstream of some individuals are significantly increased by a program of regular exercise and weight
reduction.
Which of the following can be correctly inferred from the statements above?
A. Individuals who are underweight do not run any risk of developing high levels of cholesterol in the
bloodstream.
B. Individuals who do not exercise regularly have a high risk of developing high levels of cholesterol in the
bloodstream late in life.
C. Exercise and weight reduction are the most effective methods of lowering bloodstream cholesterol levels in
humans.
D. A program of regular exercise and weight reduction lowers cholesterol levels in the bloodstream of some
individuals.
E. Only regular exercise is necessary to decrease cholesterol levels in the bloodstream of individuals of
average weight.

D

Large national budget deficits do not cause large trade deficits. If they did, countries with the largest budget
deficits would also have the largest trade deficits. In fact, when deficit figures are adjusted so that different
countries are reliably comparable to each other, there is no such correlation.
If the statements above are all true, which of the following can properly be inferred on the basis of them?
(A) Countries with large national budget deficits tend to restrict foreign trade.
(B) Reliable comparisons of the deficit figures of one country with those of another are impossible.
(C) Reducing a country's national budget deficit will not necessarily result in a lowering of any trade deficit that
country may have.
(D) When countries are ordered from largest to smallest in terms of population, the smallest countries
generally have the smallest budget and trade deficits.
(E) Countries with the largest trade deficits never have similarly large national budget deficits.

C