A fraction can be defined as?

A fraction can indeed be defined as a division problem or a ratio. This definition captures the essence of what a fraction represents mathematically. Essentially, a fraction indicates the division of one quantity by another, expressed in the form of a numerator (the top number) and a denominator (the bottom number). For instance, the fraction 3/4 signifies that 3 is divided by 4, illustrating the concept of dividing a whole into equal parts.

Moreover, understanding a fraction as a ratio provides context for its comparative nature. For example, when discussing the fraction 1/2, it can be interpreted as the ratio of 1 part to 2 parts overall, further emphasizing how fractions convey relationships between numbers.

The other choices do not encapsulate the full essence of what a fraction represents; a whole number does not involve division or parts, and while a part of a whole is relevant, it doesn't fully capture the more comprehensive definitions that include the operation and relationship aspects provided by a division problem or a ratio.