The right Answer is C.
Below you can see the right order of the sequence. Pay attention to the highlighted text, it helps us to understand the context between sentences. Every step contains a few words that give the sentence its meaning and main idea.
When you try to answer this kind of question, try to locate keywords that provide contextual information about the main idea of each numbered sentence. This will help you determine how the various steps are related to one another.
5) I arrived at a residential building to respond to an emergency call made by one of the residents.
6) I met him in the hallway of the 5th floor.
4) He told me about his 92-years old neighbor who lives alone and has not been responding to calls for a few days.
3) After he explained why he called, I started to break into the apartment using a crowbar. Inside, the old man was sitting on a sofa.
1) He got up from the sofa and started to throw things at me until I told him I'm from the emergency services and he stopped.
2) After I calmed him down I apologized and promised him he will be compensated for the damage.
We already found the right order so all that is required is to choose the order from the answers.
Tip:
If possible, start with this type of question as it is simpler to answer due to the use of elimination. Answering the other questions later will be much faster as we benefit when the right order is in front of us to use.