Welcome to Westonci.ca, your one-stop destination for finding answers to all your questions. Join our expert community now! Experience the convenience of getting reliable answers to your questions from a vast network of knowledgeable experts. Connect with a community of professionals ready to help you find accurate solutions to your questions quickly and efficiently.

The leading marketing research firm in the United States as of 2014 is:

A. Ipsos
B. Kantar Group
C. Nielsen
D. Westat, Inc