Our firm is best suited to undertake the project because we have the

A. the financial wherewithal , vast experience undertaking similar projects, and can use our large employee base - all of which is necessary -|| + verb

B. the financial wherewithal , vast experience undertaking similar projects, and a large employee base - all necessary -Correct
C. the financial wherewithal , vast experience undertaking similar projects, and a large employee base - all of whom are necessary - whom is a wrong pronoun .whom is used to refer people.

D. the financial wherewithal , vast experience undertaking similar projects, and can use our large employee base necessary - not parallel

E. the financial wherewithal , vast experience undertaking similar projects, and can use our large employee base since they are necessary -not parallel

IMO B
I got down to B and C and chose B. Not very confident with the explanation between B & C.

Aleehsgonji - you have been putting really good questions Please Please Please do post the OE as it will help lots of people here.

+1 to you.

Hoping to learn something new today.

B, parallelism, and C uses the wrong pronoun...whom?!

Dear saba@4010,
I'm happy to respond.

My friends, first of all, a few words of advice.
1) This sub-forum, General GMAT Questions and Strategies, is for logistical questions----study schedules, how to study, materials, retaking, etc. It's for questions concerning the test as a whole. What you have posted here is a content question, a specific Sentence Correction question. This should have been posted in the Sentence Correction sub-forum.
gmat-sentence-correction-sc-138/

2) When you post a SC question, always underline the correct section in the prompt.

3) When you post any question, always cite the source of the question, who wrote the question.

4) Before you post anything, search first to make sure that the question hasn't be posted before. This question has been posted before here:
our-firm-is-best-suited-to-undertake-the-project-because-we-82163.html

That post attributes this question to MGMAT, one of the finest GMAT prep companies, but it appears that the source of this question is a company known as "Manhattan Elite Prep." One thing that raises my suspicions is when one new company takes a name easily confused with a very successful company. I also consider it in very poor form that much more of the prompt is underlined and repeated in the answer choices than needs to be. This is very unlike the GMAT.

Here, it's an issue of parallelism:
....because we have
// the financial wherewithal
// vast experience undertaking similar projects
and
// can use our large employee base
That's the prompt version, version (A). All three branches of the parallelism should match. The first two are nouns, and the third is a verb phrase.

We need the noun, "a large employee base," in the third branch. That narrows the choice down to (B) & (C). From the prompt, we infer that the "all" refers to the three resources listed, not to all the employees, so (C) is wrong, and (B) works best.

As someone who writes practice GMAT SC questions, I do not hold this question in high regard. It's minimally adequate, but very easy, and not particularly GMAT-like. Here's a much more GMAT-like SC question.
An increase in the

Mike

i solved this question in ~30 seconds. Parallelism is tested in this question. Mike explained very detailed every answer choice!

Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.