2. what issue was at the root of the nullification crisis?
a the president wanted to nullify an act of congress.
b states wanted to nullify federal laws that they deemed
unconstitutional
c states wanted to nullify the constitution.
d the federal government wanted to nullify the power of the states.

The root issue for the nullification crisis was:

B States wanted to nullify federal laws that they deemed  unconstitutional

Explanation:

The Nullification crisis has its roots in the refusal to collect tariffs between 1828 and 1832 by the state of South Carolina.

it allows shippers to carry commercial goods, which allows them to save time and money.

the answer is actually b.   as habitats are destroyed, animals and plants may become extinct.   , according to edge nuity