Preservatives are added to foods to help prevent or slow spoilage due to bacteria, molds, fungi or yeast, as well as to slow or prevent changes in the food's color, flavor or texture, delay rancidity, and maintain freshness.
<em> Hope this helped! <3</em>
She should say to him don't worry theses people are helping you get better and they are going to offer you a lot of help.<span />