The JSON Response Body has $\_\_\_\_\_$ unique $($distinct$)$ elements relating to snow.

$$

Notes:

If an element has one or more characters different from other elements, consider it to be a totally different element.

If an element is repeated, do not count it twice.

The JSON Response Body has $\_\_\_\_\_$ unique $($distinct$)$ elements relating to snow.

$$

Notes:

If an element has one or more characters different from other elements, consider it to be a totally different element.

If an element is repeated, do not count it twice.

$5$

$7$

$6$

$4$