The true statement is (a) the student made an error by multiplying incorrectly. The final answer should be 
The student steps' are given as:
- Starting value: a = 6
- Constant ratio: r = 1/3


<h3>What is an exponential function?</h3>
An exponential function is a function that is represented as:

Where:
- a represents the initial value
- b represents the rate
From the student steps, we have:

The above means that:
The student did not make any error in substituting the values
However, the student made a mistake in multiplying 6 and (1/3)^x
So, the correct function that represents the given parameters is 
Read more about exponential functions at:
brainly.com/question/11464095