Which sentence uses keep up with to mean stay at the same pace?
The visitors put up with the guide's strict schedule.
A trespasser got away with entering the closed trail.
The guide came up with a safer route down the hill.
The visitors struggled to keep up with the guide.✓Respuesta correcta
Explicación
The visitors are trying to stay at the guide's speed, so they must keep pace on the climb. Putting up with a strict schedule means tolerating it, not matching another person's rate of movement.