A Revenue Officer is required to make an order under sub-section (6) of section 42 of the Land Revenue Act:

Section 42(6) of the Land Revenue Act imposes a specific time limit on Revenue Officers for making certain orders, ensuring efficiency and preventing undue delays in administrative processes. The correct answer is Within three months. This provision mandates that a Revenue Officer must pass an order under sub-section (6) of section 42 within a strict period of three months from the date the matter is brought before them. This time limit is crucial for expediting land revenue matters and providing timely justice to the parties involved. Options B, C, and D (Within six months, Within one year, and Within two years) are incorrect as they do not match the precise three-month statutory period specified in the Land Revenue Act for this particular type of order.