Question

the first step in passing should be: check blind spots and all angles of vehicle to ensure proper spacing ensure a proper space cushion between your vehicle and the vehicle behind you before returning to the lane tap the horn to make the driver ahead of you aware that you have an intention to make a change activate turn signal

Explanation:

When passing, activating the turn signal is the first step to communicate your intention to other drivers. Checking blind spots (while important) is typically done after signaling. Ensuring a space cushion is relevant when returning to the lane (not the first step). Tapping the horn is not the standard first - step in the passing procedure as per traffic rules.

Answer:

Activate turn signal