Option 1 suggests that both statements are true and that the Reason (R) properly explains the Assertion (A). However, as the human body can synthesize some fatty acids, R is incorrect.

Option 2 is also incorrect even though it correctly identifies that R is not the correct explanation of A because it incorrectly states that both A and R are individually true, which is not the case since R is false.

Option 3 correctly identifies that the Assertion (A) is a true statement - fatty acids should indeed be a part of a balanced human diet, as they play a vital role in bodily functions. It also correctly identifies that the Reason (R) is a false statement, as the human body can, in fact, synthesize certain types of fatty acids.

Option 4 inaccurately suggests that A is false and R is true, which is incorrect as the opposite is true.