The correct answer is option 4: Shifting agriculture. Shifting agriculture is a practice where farmers clear land to grow crops for a few years and then move to another area once the soil becomes less fertile. This method does not help in conserving soil fertility and moisture because it involves continuous clearing and burning of vegetation, which leads to the depletion of nutrients in the soil and increases the risk of erosion. Additionally, since no permanent crops are planted, there is a lack of vegetation to help retain moisture in the soil. On the other hand, options 1, 2, and 3 (contour ploughing, dry farming, and strip cropping) are conservation methods that help to minimize soil erosion, retain moisture, and preserve soil fertility.