As per the question, the most adequately supported deduction by the passage would be that 'the warriors are highly meticulous, self-controlled, and fully equipped with necessary equipment and weapons.' The descriptions regarding the fortitude, bravery, and fidelity of the warriors substantiate the claim that how great were the warriors of Beowulf as the latter himself was extremely mighty yet possessing a value system of courtesy and faith along with their heroic code of manners and pride displaying their modesty and discipline. Thus, this deduction about the warriors' moral code, honor, heroism, and strength is most likely supported.
