单选题 The campaign sponsored by Green World Society is______focused on saving a huge area of land affected by rampant deforestation in Tanzania.

【正确答案】 C

【答案解析】解析：根据上下文语义，此处意为“活动主要的焦点是挽救广阔的地域”，副词(C)primarily(主要地)为正确答案。(A)satisfactorily意为“令人满意地”，(B)promptly意为“立即地”，(D)successively意为“相继地”。