Consider the following pseudocode.

Create empty stack S

set $x=0$, flag $=0$, sum $=0$

Push $x$ onto $S$

while ( $S$ is not empty) $\{$

if (flag equals 0){

Set $x=x+1$

Push $x$ onto S}

if ( $x$ equals 8 ):

Set flag $=1$

if (flag equals 1){

$x=\operatorname{Pop}(\mathrm{S})$

if ( $x$ is odd):

Pop (S)

Set sum $=\operatorname{sum}+\mathrm{x}\}$

}

Output sum

The value of sum output by a program executing the above pseudocode is________

Courage : Bravery :: Yearning :

___________ Select the most appropriate option to complete the analogy.

We ___________ tennis in the lawn when it suddenly started to rain. Select the most appropriate option to complete the above sentence.

A $4 \times 4$ digital image has pixel intensities $(U)$ as shown in the figure. The number of pixels with $U \leq 4$ is: