The correct option is B pines
The word that could replace italicized word in both the sentences is option B 'Pines'. Pines is an evergreen tree or wood of pine trees. Pine also means to strongly desire for something that is difficult to obtain. The context of the first sentence is that commercial wood can be made from those pines. Second sentence means that man who always pines for everything gets nothing. Option A 'barks' refers to the bark of the tree or tree's outer hard covering. Option C 'trunks' is the main thick stem of the tree.So, A and C do not fit in sentence II. Option D 'yearns' means having an intense feeling of longing for something. This doesn't fit in sentence I. Thus, the best fit for both the sentences is option B 'pines'.