Answer:
B. Logos.
Step-by-step explanation:
It is definitely NOT Ethos, since this statement isn't even ethical.
It is not Pathos, either, since the person isn't appealing to the person's emotions for the person to trust them.
Instead, the speaker tries to use logic to persuade the person that since the person was his neighbor for 15 years, the person should trust him. B. Logos.
Hope this helps!