Town leaders hope a continued tax break for the landlord of Dunkin’ Brands Group Inc. will entice the corporate parent of Dunkin’ Donuts and Baskin-Robbins to remain in Canton. Selectmen approved a 10-year extension of a 20 percent tax break for H.N. Gorin, owners of the Dunkin’ Brands headquarters at 130 Royall St., at a meeting Tuesday. Town Meeting will now have to approve that decision. The hope, when a five-year extension was recommended in July, was that Dunkin’ Brands would then sign on for a 15-year lease with H.N. Gorin, who would pass on the savings to them. Dunkin Brands was courted by the University Station complex in Westwood, according to Canton Economic Development Committee chairman Gene Manning, and Dunkin’ spokeswoman Karen Raskopf said the company was evaluating factors in deciding whether to renew its lease. Selectmen have not received an answer from Dunkin’ Brands yet.