The estimate based on a detailed quantity survey and furnishes the most accurate and reliable estimate possible is known as

ANS:B - Definitive estimate

A definitive estimate is prepared from well defined data, specifications, drawings, etc. This category covers all estimate ranges from a minimum to maximum definitive type. These estimates are used for bid proposals, bid evaluations, contract changes, extra work, legal claims, permit and government approvals. Other terms associated with a Definitive Estimate include check, lump sum, tender, post contract changes. Etc.