Which among the following is the commonest site of diveiculosis in old population?

Diveiculosis refers to the presence of diveicula without inflammation. The sigmoid colon is the most common site of diveiculosis. The majority of colonic diveicula are false diveicula in which the mucosa and muscularis mucosa have herniated through the colonic wall. These diveicula occur between the taeniae coli, at points where the main blood vessels penetrate the colonic wall (presumably creating an area of relative weakness in the colonic muscle). Ref: Bullard Dunn K.M., Rothenberger D.A. (2010). Chapter 29. Colon, Rectum, and Anus. In F.C. Brunicardi, D.K. Andersen, T.R. Billiar, D.L. Dunn, J.G. Hunter, J.B. Matthews, R.E. Pollock (Eds), Schwaz's Principles of Surgery, 9e.