4 What is notable about Antonio Lopez de Santa Anna's
decision to lead Mexican
troops into Texas?
A
He was a firm believer in democracy.
B He had nullified Mexico's constitution.
C He was the sitting president of Mexico.
D He had just finalized a peace treaty with Stephen Austin.

the answer would be c

the 9th amendment

explanation:

most people now work in jobs where they do one  kind  of work; they are carpenters, bankers, cooks, mechanics, and so forth. likewise, most  businesses produce  only certainkinds  of  goods  or  services, such as cars, tacos, or gardening  services. this feature of  production  is known as specialization.