Please help What is the Agent & Reason of agent’s omission..

Sentence 1
Prime Minister Prayut Chan-o-cha has agreed to consider a proposal by the Phuket business community.


Subject: Prime Minister Prayut Chan-o-cha
Passive verb: has agreed to consider a proposal
Agent:
Reason of agent’s omission:

What is indirect characterization? 1 when the author shows a character’s traits through words and actions 2 when a character expresses her true nature by acting in an opposite manner 3 when the narrator tells what a character is like with an explicit description 4 when a narrator is also a character in a story who provides internal thoughts