What is implied, rather than explicitly stated, in this excerpt?

o a) the ship encountered stormy seas and cold winds.

ob) cabeza de vaca was troubled by the suffering of his men.

oc) lack of food and bad weather almost decimated de vaca's crew.

only de vaca and the sailing master were capable of manning the

od) ship.

The answer is D. Only de Vaca and the sailing master were capable of manning the ship.

Explanation:

When something is "implied" you are not offering much information as for; why is that true? On the other hand, when you are being explicit or something  has explicitly told, that means exactly the opposite of implicit; you have enough information and there's no room for uncertainty. In this context, the three first options give you descriptions and causes and effects; adjectives: cold, stormy, bad. Why did Vaca's crew almost decimated? For the lack of food and bad weather. Thus, option D is the most suitable as we do not know why only Vaca and the sailing master were capable of manning the ship.