Could you help me to check my answer and correct the wrong the one (Nascent Stage) When the mid-latitude cyclone develops Instability develops in the…

Could you help me to check my answer and correct the wrong the one
(Nascent Stage)
When the mid-latitude cyclone develops
Instability develops in the stationary front ( I choose 2.)
When the mid-latitude cyclone dies out
When the cold front completely takes over the warm front
When the cold front “starts” to take over the warm front