How do you serve static files in Express?app.use(express.static('public'))app.serve('public')app.static('public')app.loadStatic('public')

To serve static files in Express, you can use the express.static built-in middleware function in Express. Here are the steps:

1. First, you need to install Express. You can do this using npm (Node Package Manager) by running the command npm install express in your terminal.

2. Once Express is installed, you can include it in your file with this line of code: const express = require('express');

3. Next, create an instance of express: const app = express();

4. Now, you can use the express.static middleware to serve static files. For example, if you have a directory named 'public' that contains your static files, you can serve them by adding this line of code: app.use(express.static('public'));

5. Finally, you need to start your server. You can do this by using the app.listen function. For example, to start your server on port 3000, you would use this line of code: app.listen(3000);

So, the correct answer from your options is app.use(express.static('public')). The other options you provided are not valid methods in Express for serving static files.