I'd say I am capeble of doing that. .the salesman wantst to tell us that he has the...to deal with angry people.a.opportunity,b.ability,c.quality,d.capacity.

B. Ability
Jawabannya Ability karena salesman mengatakan bahwa "I'd say I am capable of doing that." capable bisa diartikan sebagai kemampuan dan kemampuan sama dengan ability jadi jawabanya adalah B. Ability