reword this for me as if a beginner wrote it
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApplication3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

      
        private void button1_Click_1(object sender, EventArgs e)
        {
            //Pizza Type Selection Fn1353

            if (radioButton1.Checked == true)
            {
                if (radioButton5.Checked == true)
                {
                    ListViewItem item = new ListViewItem("Normal Crust Small Pizza");
                    item.SubItems.Add("1");
                    item.SubItems.Add("4.00");
                    listView1.Items.Add(item);
         
                }
                else if (radioButton6.Checked == true)
                {
                    ListViewItem item = new ListViewItem("Cheesy Crust Small Pizza");
                    item.SubItems.Add("1");
                    item.SubItems.Add("4.00");
                    listView1.Items.Add(item);
               
                }
                else if (radioButton7.Checked == true)
                {
                    ListViewItem item = new ListViewItem("Sausage Crust Small Pizza");
                    item.SubItems.Add("1");
                    item.SubItems.Add("4.00");
                    listView1.Items.Add(item);
             
                }

            }

            else if (radioButton2.Checked == true)
            {
                if (radioButton5.Checked == true)
                {
                    ListViewItem item = new ListViewItem("Normal Crust Medium Pizza");
                    item.SubItems.Add("1");
                    item.SubItems.Add("7.00");
                    listView1.Items.Add(item);
              
                }
                else if (radioButton6.Checked == true)
                {
                    ListViewItem item = new ListViewItem("Cheesy Crust Medium Pizza");
                    item.SubItems.Add("1");
                    item.SubItems.Add("7.00");
                    listView1.Items.Add(item);
             
                }
                else if (radioButton7.Checked == true)
                {
                    ListViewItem item = new ListViewItem("Sausage Crust Medium Pizza");
                    item.SubItems.Add("1");
                    item.SubItems.Add("7.00");
                    listView1.Items.Add(item);
                
                }
            }

            else if (radioButton3.Checked == true)
            {
                if (radioButton5.Checked == true)
                {
                    ListViewItem item = new ListViewItem("Normal Crust Large Pizza");
                    item.SubItems.Add("1");
                    item.SubItems.Add("10.00");
                    listView1.Items.Add(item);
              
                }
                else if (radioButton6.Checked == true)
                {
                    ListViewItem item = new ListViewItem("Cheesy Crust Large Pizza");
                    item.SubItems.Add("1");
                    item.SubItems.Add("10.00");
                    listView1.Items.Add(item);
              
                }
                else if (radioButton7.Checked == true)
                {
                    ListViewItem item = new ListViewItem("Sausage Crust Large Pizza");
                    item.SubItems.Add("1");
                    item.SubItems.Add("10.00");
                    listView1.Items.Add(item);
            
                }
            }

            else if (radioButton4.Checked == true)
            {
                if (radioButton5.Checked == true)
                {
                    ListViewItem item = new ListViewItem("Normal Crust Extra Large Pizza");
                    item.SubItems.Add("1");
                    item.SubItems.Add("13.00");
                    listView1.Items.Add(item);
            
                }
                else if (radioButton6.Checked == true)
                {
                    ListViewItem item = new ListViewItem("Cheesy Crust Extra Large Pizza");
                    item.SubItems.Add("1");
                    item.SubItems.Add("13.00");
                    listView1.Items.Add(item);
               
                }
                else if (radioButton7.Checked == true)
                {
                    ListViewItem item = new ListViewItem("Sausage Crust Extra Large Pizza");
                    item.SubItems.Add("1");
                    item.SubItems.Add("13.00");
                    listView1.Items.Add(item);
              
                }
            }


            //Pizza Topping Selection

            if (checkBox1.Checked == true)
            {
                ListViewItem item = new ListViewItem("  Pepperoni Toppings");
                item.SubItems.Add("");
                item.SubItems.Add("0.75");
                listView1.Items.Add(item);
           
            }