Question

the first step to changing lanes is ____________. telling your passengers matching your speed signaling your intent honking so everyone knows

Explanation:

When changing lanes, signaling your intent first alerts other road - users of your plan, ensuring safety. Telling passengers is not necessary for the act of lane - changing itself. Matching speed is a step after signaling and checking. Honking is not the first step and may be inappropriate in many cases.

Answer:

signaling your intent