Question

The United States and Canada have worked together to construct ____ on the St. Lawrence Seaway.

Answer 1

The United States and Canada have worked together to construct locks on the St. Lawrence Seaway. The correct option among all the options that are given in the question is the third option or option "c". I hope the answer has come to your help.

Answer 2

The role of St. Lawrence Seaway in the history of the United States of America. ... A complex series of locks, canals, and waterways

c or d???