Afinancial adviser has just given you the following advice: "long-term bonds are a great investment because their interest rate is over 20%." is the financial adviser necessarily right?

No

Explanation:

Long term bonds might not be great investments if the interest rate fall  or even slide into negative value in the future. This means that the bond will become insignificant in value.  

Cheers

No

Explanation:

Determining how great an investment is dependent on more that just its interest rate. Apart from the tenor (time to maturity) and the interest rate mentioned in the question, one prominent factor to consider in determining how great a bond is is its risk.

As such, the financial adviser may be wrong in saying long term bonds are great because of the interest rate of 20% without considering the risk involved in investing in the bond.

i would say their habit of breaking down.