Among all the options, option B is the most intricate. This complexity arises because it comprises two clauses to convey its message. Packing several clauses into a single sentence can leave the reader feeling rushed. A well-constructed sentence should be concise enough to be read in one breath while clearly conveying its meaning. One clause can suffice, and if additional information is necessary, it can be incorporated with conjunctions or transitional phrases, but one should avoid excessive use.