What is the <b>correct attribute</b> to make <b>in

What is the correct attribute to make input field unusable and unclickable?

readonly
disabled
novalidate
nosubmit

Explanation

The disabled attribute specifies that the input field is disabled.
A disabled element is unusable and unclickable.
Disabled elements will not be submitted.
The read-only attribute specifies that the input field is read-only
(cannot be changed).