The writer uses the expression unless mechanically minded to refer to
A
coachman and grooms adaptable to the new technology
B
coachmen and grooms who chose to become mechanics
C
town authorities laying down tramlines
D
those amenable to change and development
Verified Correct Answer: A.
Grammar & Contextual Explanation
The expression "unless mechanically minded" refers to coachmen and grooms who would struggle to adapt to the new technology of motor vehicles. In other words, only those are can adapt to new technology would be able to continue making a living, as the rise of motor vehicles was making traditional roles like that of coachmen and grooms obsolete.
Source: Myschool Past Questions Archive (Record #15145)