The correct option is B.
The constitution gives the congress men the right to talk freely during congress debate without any fear of being sued for what had been said. Congress men can not be sued or prosecuted for anything that they say during debate in the floor of the house.
<span>he was so impressed by the ability and experience of the men at the convention </span>
Statements C and D are correct.
In America, the development of canals helped lead to the increase in population for several towns/cities that were very seldom settled before. A perfect example of this would be the development of the Erie Canal in New York. Thanks to the Erie Canal, several cities population grew immensely during this time (like Utica, Rochester, and Albany).
Along with this, connecting canals with other waterways made for convenient way of shipping goods and materials. This reduced the cost of shipping goods, making for lower prices for American consumers.