Final answer:
The product of 5 and 78 is 390, which is greater because 78 is significantly higher than 1; thus, multiplying it by 5 increases the original number.
So, the correct answer is a) 390, greater.
Step-by-step explanation:
The question asks to complete a statement regarding the product of two numbers. Specifically, it is asked what the product of 5 and 78 is, and whether the result is greater or less due to the nature of the second number, 78, being less than 1.
The product of 5 and 78 is 390, which is calculated by multiplying 5 by 78. Since 78 is significantly greater than 1, multiplying it by 5 will also result in a number that is greater than 5.
Therefore, the correct completion of the statement is: 'The product of 5 and 78 is 390, greater.' This is because multiplication by a number greater than 1 always increases the value of the original number.
So, the correct answer is a) 390, greater.