Which type of food is needed particularly for brain development for 9 month old baby

A. The best thing that you need to avoid is junk and sugary foods trust me that’s the worst to be given and best is to give proper healthy home-made food include five pieces of walnuts and almonds for your child every day even you can make a dry fruit powder at home which you can give with milk which would also be very healthy because it is highly rich omega-3