Question

1. which was a likely cause of the mud run disaster of 1888? worker carelessness mechanical malfunctions poorly functioning or non - existent signal systems too many passengers

Explanation:

The Mud Run Disaster of 1888 (a railroad disaster) was likely caused by poorly functioning or non - existent signal systems. At that time, railroad safety relied heavily on signal systems to prevent collisions. Worker carelessness, mechanical malfunctions, and too many passengers are less likely to be the primary cause compared to issues with the signal system which was crucial for coordinating train movements.

Answer:

C. poorly functioning or non - existent signal systems