For this case we have the following statement:
"All odd numbers are divisible by 3"
The options given are the following:
a) 7 is odd but not divisible by 3, therefore it is a counterexample of the given statement
b) 9 is odd and is divisible by 3, therefore it is not counter-example
c) 8 is an even number, it is not a counter-example
d) 3 is odd and affirms the given statement.
Therefore, the correct answer is option A.
Answer:
Option A
