Tough CR

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hemant.dunga: Junior | Next Rank: 30 Posts; Posts: 15; Joined: Thu Jul 09, 2009 8:06 pm

by hemant.dunga » Mon Jul 20, 2009 11:15 am

Sociologist: Climate and geology determine where human industry can be
established . Drastic shifts in climate always result in migrations, and migrations
bring about the intermingling of ideas necessary for rapid advances in civilization.

The sociologist’s statements, if true, most strongly support which one of the following?

(A) Climate is the primary cause of migration

(B) All shifts in climate produce a net gain in human progress

(C) A population remains settles only where the climate is fairly stable.

(D) Populations settle in every place where human industry can be established

(E) Every migrations accompanies by rapid advances in civilization

Source: Beat The GMAT — Critical Reasoning | Mon Jul 20, 2009 11:15 am

Domnu: Master | Next Rank: 500 Posts; Posts: 385; Joined: Sun May 24, 2009 3:55 pm; Thanked: 11 times; GMAT Score:740

by Domnu » Mon Jul 20, 2009 6:41 pm

IMO, the answer should be C: [spoiler]we can use the contrapositive here.

Drastic climate changes -> Migrations

is equivalent to stating that

No migrations (settling) -> No drastic climate changes (fairly stable climate)[/spoiler]

Have you wondered how you could have found such a treasure? -T

Mayur Sand: Master | Next Rank: 500 Posts; Posts: 166; Joined: Fri Apr 03, 2009 11:16 pm; Location: India

by Mayur Sand » Mon Jul 20, 2009 7:09 pm

Iam confused between C & E as E is talking about advancement of civilization as a result of migration

but since it talks primary about climate change and its after effects C is a better candidate . Whats the OA?

italian7745: Master | Next Rank: 500 Posts; Posts: 113; Joined: Sun May 24, 2009 8:01 am; Thanked: 4 times

by italian7745 » Thu Jul 23, 2009 12:42 am

I think the answer should be B

ashaydesai: Senior | Next Rank: 100 Posts; Posts: 31; Joined: Sun Mar 22, 2009 5:32 am; Thanked: 1 times

Hi

by ashaydesai » Thu Jul 23, 2009 1:10 am

IMO C

crackgmat007: Legendary Member; Posts: 882; Joined: Fri Feb 20, 2009 2:57 pmFollowed by: 1 member; Thanked: 15 times; GMAT Score:690

by crackgmat007 » Thu Jul 23, 2009 6:44 pm

IMO C

bignasty666: Senior | Next Rank: 100 Posts; Posts: 79; Joined: Fri Jul 10, 2009 8:02 am; Thanked: 1 times

by bignasty666 » Fri Jul 24, 2009 1:15 am

This is an inference question and only C is clearly inferrable.

joseph32: Master | Next Rank: 500 Posts; Posts: 303; Joined: Sat Aug 22, 2015 10:23 am

by joseph32 » Sun May 15, 2016 9:02 pm

Guys can anyone give a decent reason why C is not right.

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