When a cyclist turns a corner, he leans inwards; option [B]. Leaning inwards helps the cyclist counteract the centrifugal force that pulls outward during the turn, thereby maintaining balance and stability. This technique allows for smoother and safer maneuvering around the corner by redistributing the rider’s weight and aligning with the direction of the turn. Leaning outwards would increase the risk of losing balance, while not leaning at all may result in instability and difficulty navigating the turn. Similarly, leaning forward or backward primarily affects the distribution of weight along the bike, but the crucial adjustment during a turn is the inward lean, which helps the cyclist maintain control and negotiate the curve effectively. Therefore, option B, leaning inwards, is the correct response regarding the cyclist’s behavior during a turn.