In which of the following options does Point$K$ represent $\frac{1}{5}$ on the number line?

The product of a negative rational number with its multiplicative inverse is $-1$.

Do you agree? Give examples to support your answer.

Addition of a rational number to its additive inverse results in $0$.

Is this statement true for all rational numbers? Give examples to support your answer

Find three rational numbers between $3$ and $4$.

A mathematical operation of rational numbers is shown on the number line.

Which operation is it?

A mathematical operation of rational numbers is shown on the number line.

Which number will come in place of $x$?