please help me with the code

In this lab you will create a faster adder by first implementing a 4-bit Ripple Carry Adder like we discussed in class. Then you will need to create a test bench for the Ripple Carry Adder. Once you have done that follow the steps bellow to improve the speed of your adder. 1. Read Section 5.4 Fast Adders in textbook 2. Copy the Ripple Carry Adder code into a new file called Carry_Lookahead_Adder.vhd 3. Rename the Entity "carry_lookahead_adder" 4. Adjust the Code to represent a Carry Lookahead Adder 5. Drop your Carry Lookahead Adder into the Ripple Carry Adder Testbench and test its functionality 6. Generate a bitstream and test on your Basys3 board. 7. Write a short description Answering these questions 1. Why is the Carry_Lookahead_Adder Faster? 2. What is the relationship between circuit size and circuit speed? 8. Turn in all .vhd files, the writeup, and a video of you manipulating the Basys 3 board