The following problems are thought to be connected with the sources for knowledge of pre modem cultures EXCEPT ______.

A．show the value of studies on pre-modern women' s status
B．justify the unchallenging works of earlier scholars
C．present to readers an ancient women-ruled community
D．prove the difficulty in the research of pre-modern cultures

A．the reduction in brain nerve cells
B．the decline in memory
C．the loss of cells in hearing process
D．the shrinkage in muscle tissues