An important technique used to develop $1509001-$ compliant quality systems by botheraluating

reliability and determining the effects of system and equipment failures is which of the following?

a$.$ Failure mode and effects analysis $($FMEA$).$

b$.$ Capability Maturity Model Integration $($CMMI$).$

c$.N-$version programming.

d$.$ DO$-178$B$/$EUROCCAE ED$-128.$