Keeping in mind the major risks, in each of the cases below, which security should the investor buy and why?

1. An investor plans to hold a bond for one year. She is deciding whether to buy a Treasury security that matures in one year versus a Treasury security that matures in 30 years.

2. An investor plans to hold a security for 10 years. She is deciding whether to buy a Treasury security that matures in 10 years versus a AAA rated corporate security that matures in 10 years.

3. An investor plans to hold a security for 2 years. She is deciding whether to buy a zero-coupon Treasury security that matures in 1 year versus a zero-coupon Treasury security that matures in 2 years.

4. An investor plans to hold a security for 5 years. She is deciding whether to buy a less actively traded 10-year AA rated bond versus a 10-year AA rated bond that is actively traded.

5. A US investor plans to hold a security for 10 years. She is deciding whether to buy a US Treasury security that matures in 10 years versus a Greek government security that matures in 6 years and is denominated in euros.