mona lisa : GMAT Verbal Section
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mona lisa

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Director
Joined: 13 Mar 2007
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Schools: MIT Sloan
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01 May 2007, 22:20
Art historians are using a process known as infrared scanning in analyzing the Mona Lisa to determine if it has been altered since completion and if Leonardo da Vinci first sketched the figure in black, as done by many artists of the time.

(A) if it has been altered since completion and if Leonardo da Vinci first sketched the figure in black, as done

(B) if it had been altered since completion and if Leonardo da Vinci first sketched the figure in black, a practice employed

(C) whether it has been altered since completion and whether Leonardo da Vinci first sketched the figure in black, a practice employed

(D) whether it was altered since completion and whether Leonardo da Vinci first sketched the figure in black, as was done

(E) whether it had been altered since completion and whether Leonardo da Vinci first sketched the figure in black, a practice done
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Joined: 19 Feb 2007
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01 May 2007, 22:28
I'll go with C.

Whether is reqd here so A and B are out.

Out of has been, was and had been .................has been sounds good to me.
Director
Joined: 13 Mar 2007
Posts: 545
Schools: MIT Sloan
Followers: 4

Kudos [?]: 67 [0], given: 0

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01 May 2007, 22:39
any specific reason for choosing has been ?

has been - present perfect suggests an action started in past and still ongoing , but alteration was done in the past and the action does not continue in the present .. so thought just 'was' would suffice ..

why is D wrong ?
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