Here is a couple of examples of how you can set values in a select field:
Firstly, install react-select
npm install react-select
Now we can use the react select component
Option 1. insert the values directly in the options prop
<Select placeholder="food items" name="foodItems" options={[{value:'egg', label:'egg'}, {value:'milk', label:'milk'}, {value:'cheese', label:'cheese'}]}/>
Option 2. Place values in a const
const foodItem = [{value:'egg', label:'egg'}, {value:'milk', label:'milk'}, {value:'cheese', label:'cheese'} ];
...
<Select placeholder="food items" name="foodItems" options={foodItem}/>