All the following planks of the populist party platform were later accepted by americans except
a. the graduated income tax
b. direct election of u.s. senators
c. the use of the secret ballot
d. government ownership of telegraph and telephone industries

1. A plan to be somewhere or do something

Explanation:

A schedule is simply a plan to be somewhere or do something. From the passage, we can see that the context in which the word "schedule" was used is talking about the bus being behind the planned time it was supposed to take off.

Therefore, Option 1 is the correct answer.