Final answer:
The symbol that will make the number sentence true is <, which means less than.
Step-by-step explanation:
The symbol that will make the number sentence true is <, which means less than.
To understand why, let's compare the two numbers in the number sentence: 4356 and 0.75. Since 0.75 is less than 4356, we can use the < symbol to show that 0.75 is smaller than 4356.
So the correct answer is B. <