To determine which bar will be the tallest in the given comparative bar chart, we need to compare the numerical values provided for each category. Let's go through the data step-by-step:
1. Cats who passed: 24
2. Cats who failed: 30
3. Dogs who passed: 26
4. Dogs who failed: 28
We will compare these values to identify the largest one.
- Cats who passed = 24
- Cats who failed = 30
- Dogs who passed = 26
- Dogs who failed = 28
Among these values, the highest number is 30, which corresponds to Cats who failed. Therefore, the bar representing "Cats who failed" will be the tallest in the comparative bar chart.
Thus, the correct answer is:
B. Cats who failed