<select id="secectorOne" onchange="addblock(this)">
  <option value="Cat">Cat</option>
  <option value="Dog">Dog</option>
  <option value="Mause">Mause</option>
</select>
<p>Cat &times;</p>
<img src="https://i.ibb.co/x5dwb4z/cat.jpg" alt="cat" border="0">

<p>Dog &times;</p>
<img src="https://i.ibb.co/JnSybFn/dog.png" alt="dog" border="0">

<p>Mouse &times;</p>
<img src="https://i.ibb.co/kqRHj4r/mouse.jpg" alt="mouse" border="0">

p {
  padding: 4px 5px;
  background: #ccc;
  width: 55px;
  border-radius: 10px;
}

img { 
width: 100px;
height: 100px;
}

function addblock(el) {
  var p = document.createElement("p");
  p.textContent = el.querySelectorAll("option")[el.selectedIndex].textContent;
  el.parentNode.appendChild(p);
}