The right answer to that question is ra
The answer is the sudden unexpected death of a loved one. In addition, Post-traumatic stress disorder or as called as (PTSD) is a mental health condition that is prompted by a frightening event in which either experiencing it or witnessing it. The indications may consist of flashbacks, hallucinations and severe anxiety and as well as irrepressible thoughts about the happening.
20: checks and balances!
21: Duties: execute law, enforce law, make laws. who does them? EXECUTIVE branch EXECUTEs laws, LEGISLATIVE branch makes laws, and JUDICIAL branch ENFORCES the laws. making sure they are constitutional.
Answer would be b. phanerozoic