SC TC 55 12

[SmarpanGamt]

With cloning technology, scientists are approaching what has long been the ultimate goal of modern husbandry: achieving a consistency of quality and production in farm animals as once thought to be limited to manufactured goods.

(A) achieving a consistency of quality and production in farm animals as once thought to be
(B) achieving farm animals with a consistency of quality and production as were once thought of as
(C) achieving in farm animals a consistency of quality and production that was once thought to be
(D) achievement of farm animals whose consistency of quality and production are the same as what were once thought to he
(E) achievement of farm animals at a consistency of quality and production once thought of as

Please explain each of the choices.

[GMATMadeEasy]

With cloning technology, scientists are approaching what has long been the ultimate goal of modern husbandry: achieving a consistency of quality and production in farm animals as once thought to be limited to manufactured goods.

(A) achieving a consistency of quality and production in farm animals as once thought to be
(B) achieving farm animals with a consistency of quality and production as were once thought of as
(C) achieving in farm animals a consistency of quality and production that was once thought to be
(D) achievement of farm animals whose consistency of quality and production are the same as what were once thought to he
(E) achievement of farm animals at a consistency of quality and production once thought of as

Please explain each of the choices.

I would say A.

B -> 1. achieving farm animals.... indirect 2. thought of as is incorrect idiom
C-> 1. achieving in farm animals ... 2.
D -> 1. achievement of farm animals 2. change of leaning
E-> same as B

[gmat62k10]

I think its C

The whole underlying section modifies the ultimate goal.

The achieving ...animals is a modifier and ..once thought is another modifier that modifies ..achieving
That is why it should joined by "that"

[beat_gmat_09]

With cloning technology, scientists are approaching what has long been the ultimate goal of modern husbandry: achieving a consistency of quality and production in farm animals as once thought to be limited to manufactured goods.

(A) achieving a consistency of quality and production in farm animals as once thought to be
(B) achieving farm animals with a consistency of quality and production as were once thought of as
(C) achieving in farm animals a consistency of quality and production that was once thought to be
(D) achievement of farm animals whose consistency of quality and production are the same as what were once thought to he
(E) achievement of farm animals at a consistency of quality and production once thought of as

Please explain each of the choices.

B, D, E have incorrect usage of achieving.
A uses "as", which is incorrect here.
C is better.
OA ?

[SmarpanGamt]

OA C

[GMATMadeEasy]

Whay A is incorrect beucase of use AS ?

Any expert please ?