challenger63 wrote:The quality of the new products that ACME Corporation have developed over the past year and that have recently arrived on retailers' shelves worry many business analysts, who think that the company has lost focus under the new CEO's leadership.

A) The quality of the new products that ACME Corporation have developed over the past and that have recently arrived on retailers' shelves worry

Subject-Verb Agreement: ACME corporation HAS developed.
Subject-Verb Agreement: The quality...WORRIES many business analysts...

(B) The quality of the new products that ACME Corporation has developed over the past year and that has recently arrived on retailer's shelves worry

Subject-Verb Agreement: the new products that HAVE recently arrived...
Subject-Verb Agreement: The quality...WORRIES many business analysts...

(C) The quality of the new products that ACME Corporation have developed over the past year and that has recently arrived on retailer's shelves worry

Subject-Verb Agreement: ACME corporation HAS developed.
Subject-Verb Agreement: the new products that HAVE recently arrived...
Subject-Verb Agreement: The quality...WORRIES many business analysts...

(D) The quality of the new products that ACME Corporation has developed over the past year and that have recently arrived on retailer's shelves worries

(E) The quality of the new products that ACME Corporation have developed over the the past year and
that have recently arrived on retailers's shelves worries

Subject-Verb Agreement: ACME corporation HAS developed.

Hope that helps. Two quick things, challenger: could you cite the source of these questions? Also, when posting, try to avoid typos in the original question, as it can cause real confusion. Also, it's great if you can underline the actual underlined portion, to help with the visual aspect.

Thanks!

-t