This line shows that the character is an everyday person. A person of a high social class would not be willing to complete any service. However, a person of a lower social class, who is also described as humble, would be more likely to perform any service asked of him. Of the possible options, this is the best choice.
A ranch is an area of land, including various structures, given primarily to the practice of ranching, the practice of raising grazing livestock such ascattle or sheep for meat or wool
