Question 1200759
The argument is **invalid**. The error in reasoning is the **false chain pattern**. 

* **False Chain Pattern:** This occurs when an invalid connection is made between two separate statements. 

In this case:

* Premise 1: Blue-chip stocks are safe investments.
* Premise 2: Stocks that pay a high rate of interest are safe investments.

These statements are both true, but they don't logically connect to form the conclusion:

* Conclusion: Blue-chip stocks pay a high rate of interest.

**Explanation:**

* Just because something is a "safe investment" doesn't automatically mean it falls into every category of "safe investment." 
* There are various factors that make an investment "safe," and paying a high interest rate is only one of them. 

**Key takeaway:** Even if the individual premises are true, the conclusion doesn't necessarily follow from the given information.