Which of the following statements, if true, weakens the logic of the above passage ?
i. A number of studies have shown that high levels of physical stress lead to a weaking of the decision making capabilities of human beings.
ii. It has been convincingly demonstrated by various studies that human beings by nature are not designed to adapt to high levels of mental stress.
iii. Numerious studies have shown that simulated environments can be designed to be good substitutes for real life combat situations.
iv. Studies have shown that simulated exercises for armed forces personnel have tended to induce a systematic type of “correct” and common behaviour among the trainees.
v. Officers, when short listing soldiers for critical operations, pick up battle-hardened soldiers rather than those who have been trained through simulations.