im a little rusty on this so i dont really know the answer but it's between A or B, this is because the sun is mainly heating up the land causing air that is over the land to heat up and rise up, this pulls the cool air that is over the lake to move into the part where the hot air was and cause wind to happen, basically creating a cycle that wont stop until it's night time
what the question is asking is how does the sun creates wind that moves from the late to the land. hope my explanation of what is shown in the graph helps you, good luck
PS: if you'd ask me to choose one, i'd guess it's B