To solve this problem, let's break down the prefix "semi-" using the information from the table.
1. Analyzing the Prefix "semi-":
- The table provides the meaning of the prefix "semi-" as:
- Half in value
- Happening once halfway through a specific time period
2. Applying the Meaning to the Term "Semiannual":
- "Semiannual" incorporates the prefix "semi-" with the word "annual".
- "Annual" means happening once per year.
- Combining "semi-" with "annual":
- "Semiannual" means happening once halfway through a year.
- Since it occurs halfway through the year, it implies the event happens every half year.
3. Determining Frequency:
- If an event occurs every half year, it happens twice in one full year.
4. Choosing the Right Option:
- We are given four choices for the frequency:
- Once a year
- Twice a year
- Twice a month
- Every other year
- Based on our breakdown, "semiannual" indicates the event happens twice a year.
Therefore, the correct answer is:
Twice a year
