· Option a) is incorrect because it is neither factually correct nor the passage clearly mentions that it sometimes saves an individual.
· Option b) is incorrect because the passage uses "one of the vital steps" which does not imply the most significant.
· Option c) is incorrect because organ transplant is one of the ways and not the only way
· Option d) is correct because the passage states that "In the status quo, many people die as there is not a sufficient number of organs that match the blood type and antibodies of the recipients." This makes the option correct.
· Option e) is incorrect because the passage states that when there is no match of blood type, there is a possibility of rejection which again does not imply that it will definitely be rejected.
Therefore, the correct answer is option d).