Answer: D) Another category of trees is the broadleaf trees, which include oaks, elms, birches, and maples.
Step-by-step explanation:
Option A is incorrect because it states which trees are also broadleaf as if broadleaf trees had already been introduced, which hasn´t happened in the provided sentence. Option B provides details about broadleaf trees, which would also require broadleaf trees to be previously presented in a similar manner to the sentence provided. Option C is incorrect because it describes deciduous trees which can be both broadleaf and coniferous trees, and would require both kinds of trees to be already presented. Only option D states which kinds of trees are broadleaf in a similar manner to the sentence about which are needle-leaf trees.