In the given question, a sentence is divided into five parts out of which the last part is correct. Out of the remaining four, there are errors in three parts. Choose the part which doesn't have an error. If all the parts are correct, mark 5 i.e. All are correct as the answer.
(A) Some people seem genetic predisposed (B) on develop heart disease; (C) if a person's parents suffered with it, (D) the likelihood is greater that (E) he or she will too.
Only part D of the sentence is grammatically correct and hence error-free.
Part A is wrong since the adjective 'genetic: relating to genes or heredity’ is used instead of the adverb 'genetically: in a way that relates to genes or genetics.’
Part B is wrong since the preposition 'on’ is used instead of the appropriate preposition 'to’.
Part C is wrong since the preposition 'with’ is used instead of the appropriate preposition 'from’.
Hence the correct answer is option 4.