I got this one through the process of elimination. He has significant blood loss, which can be inferred he might be in hypovolemic shock. This would activate the sympathetic nervous system, which would contract the systemic arteriole and venous smooth muscle to shunt blood back to the heart. Secretion of renin will be increased to increase BP. ANP is the hormone that counteracts the effect of aldosterone so it would be decreased in this case.

Among these answers, only reabsorption of fluid into capillaries make sense as it would help increase the intravascular volume.