Plz help me out SC problem

[aimkp]

Hi.. All

Need help in below SC problems

1.)

Oberlin College in Ohio was a renegade institution at its 1833 founding for deciding to accept both men and women as students.
(A) at its 1833 founding for deciding to accept
(B) for the decision at its 1833 founding to accept
(C) when it was founded in 1833 for its decision to accept
(D) in deciding at its founding in 1833 to accept
(E) by deciding at its founding in 1833 on the acceptance of

2.)

On the Great Plains, nineteenth-century settlers used mud and grass to build their homes, doing it without timber and nails.
(A) settlers used mud and grass to build their homes, doing it without
(B) settlers used mud and grass to build their homes, did it without
(C) settlers used mud and grass to build their homes, making them while not having
(D) settlers used mud and grass to build their homes, making do without
(E) settlers' homes were built of mud and grass, making do without

[Gmat_War]

IMO
1.B
2.E

What is the OA

[nxanand]

IMO 1. C
2. A

[Osirus@VeritasPrep]

1) C
2) D

1) Basically A, B, D, and E are incorrect because the prepositions that begin these answer choices do not fit the context of the sentence.

2) A) "doing it" is ambiguous
B) "did it" incorrect tense
C) Pronoun ambiguity (them could refer to settlers or homes)
E) "making do..." can't modify "homes' which is the subject of that clause since settlers' is possessive.

[frank1]

1.B
2.D

[analyst218]

1. D
2. A

[ansh.kumar]

my pick is
1 = D: , at 1833 founding seems awkward
2- D. , who are making do (managing) = settlers

[ansumania]

OA pl.........

[adi_800]

Answers for both questions are D and D.
These are official answers..