(a) Which unit(s) could be used for the unit of measurement? Check all that apply. seconds ounces hours pounds minutes (b) Which of the procedures below would be the best way to find the average weight? Randomly pick fish from the entire pond and weigh each of them. Randomly pick fish from the entire pond and estimate their weights. Pick fish from a shallow region of the pond and estimate their weights. Pick fish from a shallow region of the pond and weigh each of them.