Three statements are given, followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements.
Statements:
1. Some hills are plateaus.
2. Some plateaus are deserts.
3. All deserts are plains
Conclusions:
I. Some plains are plateaus.
II. Some plains are hills.
III. All deserts are hills.

1. Some hills are plateaus.
2. Some plateaus are deserts.
3. All deserts are plains

Conclusion I: Some plains are plateaus.
Some plateaus are deserts.
All deserts are plains.
The portion of plateaus that overlaps with deserts is part of plains.
Thus, Conclusion I logically follows.

Conclusion II: Some plains are hills.
Some hills are plateaus.
Some plateaus are deserts, and from Statement 3, all deserts are plains.
However, there is no direct relationship established between hills and plains in the given statements.
Thus, Conclusion II does not follow.

Conclusion III: All deserts are hills.
All deserts are plains.
There is no statement suggesting that deserts are related to hills.
Thus, Conclusion III does not follow.

Thus, correct option is (b). 

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