The statement 'By 1910, the motor car was plainly conquering the highway' means that
A
By 1910, many people knew how to drive motor cars
B
The motor car was invented in 1910
C
Highway codes for motor cars came into effect by 1910
D
By 1910, motor cars became a common sight on the highways
Verified Correct Answer: D.
Grammar & Contextual Explanation
The passage mentions that by 1910, the motor car was "plainly conquering the highway," which means that motor cars had become widespread and were becoming a dominant presence on the roads. This means that by that time, motor cars were no longer rare or exceptional but had become common on the highways.
Source: Myschool Past Questions Archive (Record #15146)