Please only answer which is correct a b c d $($no explanation$)$

This method of decomposition focuses on $\_\_\_$ while preserving dependencies.

a$)$ Lossless Decomposition

b$)$ Loss Decomposition

c$)$ Less Decomposition

d$)$ Lossfull Decomposition

Which of the following is not part of ERD?

a$)$ Entities

b$)$ Attributes

c$)$ Relationships

d$)$ Processes

An entity in an ER diagram represents

a$)$ An attribute

b$)$ A relationship

c$)$ A real$-$world object or concept

d$)$ A data type

Cardinality in an ER diagram defines

a$)$ The number of attributes in an entity

b$)$ The maximum number of occurrences of one entity related to another

c$)$ The data type of an attribute

d$)$ The primary key of an entity

Normalization is the process of:

a$)$ Adding redundancy to a database

b$)$ Removing redundancy and improving data integrity

c$)$ Increasing data access time

d$)$ Creating indexes on tables

First Normal Form $(1$NF$)$ states that:

a$)$ Every attribute must be atomic

b$)$ A table must have a composite primary key

c$)$ All non$-$key attributes must be fully dependent on the primary key

d$)$ There are no repeating groups

Second Normal Form $(2$NF$)$ is achieved when:

a$)$ A table is in $1$NF and has no partial dependencies

b$)$ A table has a single attribute primary key

c$)$ All attributes are dependent on the primary key

d$)$ There are no repeating groups

A functional dependency:

a$)$ Shows the relationship between entities

b$)$ Shows the relationship between attributes

c$)$ Defines the cardinality of a relationship

d$)$ Determines the primary key

A composite key is

a$)$ A single attribute that uniquely identifies a row

b$)$ A combination of multiple attributes that uniquely identifies a row

c$)$ A non$-$key attribute

d$)$ A foreign key

The process of identifying entities and relationships in a real$-$world environment is known as:

a$)$ Database design

b$)$ Data modeling

c$)$ Normalization

d$)$ Data mining