What is rido? should this be prevented or be respected as a cultural practice?

Rido refers to a state of recurring hostilities between families and kinship groups characterized by a series of re- taliatory acts of violence carried out to avenge a perceived affront or injusticeMaranaos are noted for their pride and rido culture which refers to self-esteem, personal dignity, honor and pride at one extreme and family feuds, conflicts, revenge, retaliatory acts on the other. Thus, they are extremely sensitive people especially when their 'amor propio' is at stake.

answer; i believe the correct answer is (b) by using a multimeter;

(because i need 20 chars)