In the following question two statements are given. Identify which of the statements is/are necessary /sufficient to answer the question.
Question:
Among the bags A, B, C and D which one is the lightest bag?
Statements:
1. B is heavier than A.
2. A is lighter than C and D.

Statement: 

Should there be a cap on maximum number of contestants for parliamentary elections in any constituency? 

Arguments 

I. Yes, this will make the parliamentary elections more meaningful as the voters can make a considered judgement for casting their vote. 

II. No, in a democracy any person fulfilling the eligibility criteria can contest parliamentary elections and there should be no restrictions. 

Two statements are given followed by two conclusions I and II. You have to consider these statements to be true, even if they seem at variance form commonly known facts. Choose which of the given conclusions logically follows from the given statement.
Statement:
I. All chairs are wood.
II. No wood is furniture.
Conclusions:
I. All chairs are furniture.
II. Some furniture are wood.

Statements: 

Some politicians are social workers. 

All doctors are social workers. 

Conclusion: 

I. Some doctors are politicians 

II. Some social workers are doctors as well as politicians. 

In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which the given conclusion logically follows the given statements. 

Statement: 

All wheat are grain. 

Some wheat is flour. 

Conclusion: 

I. Some grain are flour.

II. Some flour are wheat. 

In each of the following questions one/two statements are given followed by two conclusions (I) and (II). You have to consider the two statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follow from the given statements.

Statement: Some books are Magazines
Some magazines are Novels
Conclusion
(I) Some books are Novels
(II) Some Novels are Magazines

Which of the assumptions is inferred from the statement given below?
Statement:
The school management has announced the addition of music and art sessions in each class.
Assertion:
I. Management wants to create a holistic approach to learning.
II. Want to give children a foundation to learn management arts.

Statements:
I. All T is P.
II. Some P is Q.
Conclusion:
I. Some Q is P.
II. Some P is T.