The correct answer is A) reduce your drift rate. Using a sea anchor with a survival craft will help reduce the drift rate of the craft by creating drag and slowing its movement through the water. This can be important for conserving resources and maintaining the craft's position, which can aid in search and rescue efforts. The other answer choices are not the primary functions of using a sea anchor - it does not directly increase visibility, aid in recovering the craft, or keep it from turning over. Those are secondary benefits that may result from the reduced drift rate, but the main purpose of the sea anchor is to slow the craft's movement through the water.