Which of the following statements about the olmec is correct?
they played a game with a rubber ball which was also important to maya and aztec culture.
they carved huge monumental heads which may represent their kings.
towards the end of olmec civilization, they developed a writing system which influenced the scripts of later mesoamerican cultures.
all of the answers are correct.

The best answer is that they carved huge monumental heads which may  represent their kings.

This is one characteristic unique to the Olmec  people. They build stone  heads of colossal size that were nearly 3 meters high and 8 ton in weight.

The stones were carved in Basalt and all of them display unique facial features such that they can be  considered to be  portraits of their rulers

The stone from which they were carved was in some  cases transported 80 km from source to the capital.

Olmec culture also included ball games and drinking  of chocolate . These practices were passed on to other civilization that later arose.

worcester v. georgia, legal case in which the u.s. supreme court on march 3, 1832, held (5–1) that the states did not have the right to impose regulations on native american land. andrew jackson refused to enforce the ruling, the decision form the basis for most subsequent indian law in the united states.

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering