This is the construction of vessels that make voyages across the sea, and was an industry of primary importance to the American colonists

answer; primary source information;

answer; /// the above is ( false );

i think it's d because a "rythem" is a

1)a particular type of pattern formed by rhythm.

2)a strong, regular, repeated pattern of movement or sound.

3) the systematic arrangement of musical sounds, principally according to duration and periodic stress.

so, d mabye.