Which of the following hormones is currently thought to decrease plasma calcium levels in pregnant women and children? a) calcitoninb) thyroid hormonesc) parathyroid hormone (pth)d) calcitriol

I'd say it's (A)/ Calcitonin since it actually decreases blood calcium levels by inhibiting stimulating osteoblasts, osteoclasts, and stimulating calcium excertion by the kidneys. I hope this response will help you.

answer; i believe its echoic memory,it is believed to last three to four seconds; good luck

this would be a math