In terms of the data relationships found by data mining, sequences refers to:
a. events linked over time.
b. patterns that describe a group to which an item belongs.
c. occurrences linked to a single event.
d. classifications when no groups have yet been defined.
e. undiscovered groupings.

Option (C)

Explanation:

Relational data mining is referred to as or known as data mining method or technique used for the relational databases. It acts unlike the algorithms of traditional data mining, that tend to look for the  propositional patterns in single table, algorithms of relational data mining tends to look for the relational patterns among the multiple tables.

    racial conflict and discrimination has existed ever since man learned to kill with rocks and bones. these conflicts arose from disputes between territory, power, wealth, religion, or simple difference. some of the most infamous racial disputes include slavery, the holocaust, and the civil rights movement.

    these listed disputes often resulted in casualties from all sides. riots, wars, imprisonment, and lynching are all commonly associated with racial conflict on severe levels.

      however, racism is an improving issue in recent decades. people are being more accepting and welcoming of diverse populations. though, the world isn't perfect and it will take much more time, if ever, until the world is rid of racism.