Explain why some cells in a females body respond to reproductive hormones while other cells do not.

As with any cellular signal, only cells that are expressing receptors on their cell surface for a particular signal will be effected. In the case of your question, only cells in a womens body that are expressing specific receptors for reproductive hormones will respond to those hormones.

How some cells know to have receptors and others do not is a mystery to science still. It is likely determined by a combination of environmental and genetic cues during development.

if u need the answers look it up on google youll find it trust im just saying this incase no one out : )