A company has an existing OmniScript that gathers customer information.

The three input elements that can be recommended to improve usability and provide validation are Radio Group, Email, and Range. Radio Group allows the user to select one option from a list of values, which reduces typing and ensures valid input. Email validates that the input is a valid email address format. Range allows the user to select a numeric value within a specified range using a slider, which reduces typing and ensures valid input. Headline is not an input element, but a display element that shows text in large font size. Text Area is not suitable for this scenario, as it allows the user to enter multiple lines of text without validation.