Learn HTML Forms by Building a Registration Form - Step 41

The step is asking to give each submittable element a name attribute, and then proceeds to say the file needs a name attribute. I am unsure of which elements are submittable and I do not know what file it is talking about

Your code so far

<!-- file: index.html -->
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <title>Registration Form</title>
    <link rel="stylesheet" href="styles.css" />
  </head>
  <body>
    <h1>Registration Form</h1>
    <p>Please fill out this form with the required information</p>
    <form method="post" action='https://register-demo.freecodecamp.org'>
        <fieldset>
        <label for="first-name">Enter Your First Name: <input id="first-name" name="first-name" type="text" required /></label>
        <label for="last-name">Enter Your Last Name: <input id="last-name" name="last-name" type="text" required /></label>
        <label for="email">Enter Your Email: <input id="email" name="email" type="email" required /></label>
        <label for="new-password">Create a New Password: <input id="new-password" name="new-password" type="password" pattern="[a-z0-5]{8,}" required /></label>
      </fieldset>
      <fieldset>
        <label for="personal-account"><input id="personal-account" type="radio" name="account-type" /> Personal Account</label>
        <label for="business-account"><input id="business-account" type="radio" name="account-type" /> Business Account</label>
        <label for="terms-and-conditions" name="terms-and-conditions">
          <input id="terms-and-conditions" type="checkbox" required name="terms-and-conditions" /> I accept the <a href="https://www.freecodecamp.org/news/terms-of-service/">terms and conditions</a>
        </label>
      </fieldset>
      <fieldset>
        <label for="profile-picture">Upload a profile picture: <input id="profile-picture" type="file"/></label>
        <label for="age">Input your age (years): <input id="age" type="number" min="13" max="120" /></label>
        <label for="referrer">How did you hear about us?
          <select id="referrer" name="referrer">
            <option value="">(select one)</option>
            <option value="1">freeCodeCamp News</option>
            <option value="2">freeCodeCamp YouTube Channel</option>
            <option value="3">freeCodeCamp Forum</option>
            <option value="4">Other</option>
          </select>
        </label>
        <label for="bio">Provide a bio:
          <textarea id ="bio" rows="3" cols="30" placeholder="I like coding on the beach..."></textarea>
        </label>
      </fieldset>
      <input type="submit" value="Submit" />
    </form>
  </body>
</html>
/* file: styles.css */
body {
  width: 100%;
  height: 100vh;
  margin: 0;
  background-color: #1b1b32;
  color: #f5f6f7;
}

label {
  display: block;
  margin: 0.5rem 0;
}

Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36

Challenge: Learn HTML Forms by Building a Registration Form - Step 41

Link to the challenge:

take a look at the work you’ve been doing in the preview pane.

All the parts of the form that a user can modify are “submittable elements”.
And in the case of the file input element, that’s the one that you created for the profile picture section of the form.
All you have to do is find every element that the user can modify, and add name to that.