Consider the following tree:

Screen Shot $2021-01-19$ at $3\mathrm{.}39\mathrm{.}54$ PM$.$png

Node $5$ is a

$[$ Select $]$

of node $3.$

Node $9$ is an

$[$ Select $]$

node.

Node $8$ is a

$[$ Select $]$

of node $1.$

Node $3$ is the

$[$ Select $]$

of node $8.$

Node $8$ is a

$[$ Select $]$

node.

Node $10$ is a sibling of node $2.$

Node $1$ is an ancestor of node $6.$

The relationship beween nodes $10$ and $9$ is

$[$ Select $]$

$.$

Node $9$ is at level

$[$ Select $]$

of the tree.

The height of this tree is

$[$ Select $]$

$.$

Answer $1$:

child

Answer $2$:

internal

Answer $3$:

descendent

Answer $4$:

parent

Answer $5$:

leaf

Answer $6$:

sibling

Answer $7$:

ancestor

Answer $8$:

they are unrelated

Answer $9$:

$2$

Answer $10$:

$3$

Question $2$

$1/1$ pts

Considering an arrayed binary tree as defined in section $8\mathrm{.}4$ of the course readings, which array index represents the parent of the node represented by index $15$ of the array?

$6$

$8$

$7$

$5$