4b) Read the text and match the titles (A-D) to the sections (1-4). Then explain the words in bold.

Not having the full text, my best guess is: Section 1 - C (When you cross the street on foot), Section 2 - A (When you ride your bike), Section 3 - B (When you travel in a car), Section 4 - D (When you travel on a bus). The bold words likely emphasize important actions or objects related to safety, such as 'seatbelt,' 'crosswalk,' or 'handrail.'