In railway signalling, an interlocking is an arrangement of signal apparatus that prevents conflicting movements through an arrangement of tracks such as junctions or crossings. The signalling appliances and tracks are sometimes collectively referred to as an interlocking plant. An interlocking is designed so that it is impossible to display a signal to proceed unless the route to be used is proven safe.
Answer:
The main idea of the text is, 1. Susana and her mom travel and shop.
Explanation:
According to the previous reading Susana travels with her mother in different countries and always makes purchases to each place they go.
B. He should have given the infant CPR when she was unresponsive
<em>hope that helps:)</em>
Tú prefieres ir al teatro is the answer
