Interesting question, Rev. Certainly touch seems to be the last sense to go---and the first that a baby recognises or responds to (almost immediately after birth). People who are very sensorily disabled also respond to touch even if they have no response to any other sensory stimulation.

But I do not know which sense historically developed first, and I doubt if it would be possible to find out. At what stage in our development to humaness would the assessment be taken?