Final answer:
The decimal 0.3 can be expressed as the fraction 1/3, which is the simplest form and the correct answer from the provided options.
Step-by-step explanation:
The student is asking how to write the decimal 0.3 as a fraction. This is a simple conversion from a decimal to a fraction. The figure 0.3 can be expressed in fractional form by recognizing that 0.3 is the same as 3 tenths, which is written as ⅓. Simplifying this fraction further is not necessary as 3 is a prime number and thus, cannot be broken down into smaller whole number ratios with 10. Hence, the fraction that represents the decimal 0.3 is ⅓ among the provided options.