What could be the order of rotational symmetry of a circle? $\left(1/2/3/\text{infinite}\right)$

Which of the following figures have rotational symmetry of order more than $1$?

Write the order of rotational symmetry of the following figure.

    _____.

The order of the rotational symmetry of the following figure is _____.

Write the order of rotational symmetry of the following figure.

_____

Write the order of rotational symmetry of the following figure.

_____

Write the order of rotational symmetry of the following figure.

     _____.

Can a shape have both reflection and rotational symmetries? If yes, give examples.

Can any shape have rotational symmetry of order greater than $2$ without having lines of symmetry?