1-C. A desert-style garden is better because it is more economical.A desert-style garden is better because it is more economical.
砂漠スタイルの庭園がより良いです、なぜなら、それがより経済的であるから。
2-C. Bob: So what you're saying, Anne, is a desert-style garden is better because it is more economical.Bob: So what you're saying, Anne, is a desert-style garden is better because it is more economical.