Read the following email message. Complete the email by filling in the blanks. Select the best choice for each blank.

Hi John, I'm writing to share some interesting details about the castle defense features I learned during my tour guide training. The castle's first line of defense was the 1......, which prevented direct access to the main entrance. At the main gate, they had multiple security measures, including 2...... that could be dropped quickly to block intruders. The castle walls were incredibly 3......, which made them nearly impossible to break through. What I found most fascinating was the keep, which served as 4....... The soldiers could effectively defend the castle using 5...... that were built into the walls, allowing them to shoot arrows while staying protected. Let me know if you'd like to join me for a tour sometime! Best regards, Mike

Choose the best option.

The castle's defensive features were designed primarily to 1....... The bailey was important because it 2....... The battlements were designed so that defenders could 3.......