The correct answer is D. PyOD.
PyOD is a Python library for anomaly detection and outlier analysis in time series data. It provides a wide range of anomaly detection algorithms, including Isolation Forest, One-Class SVM, and Local Outlier Factor. PyOD also provides a number of features for outlier analysis, such as visualization and statistical testing.
Pandas is a Python library for data analysis. It provides a number of features for working with time series data, such as reading and writing data, converting data types, and performing calculations. However, Pandas does not provide any specific features for anomaly detection or outlier analysis.
Seaborn is a Python library for statistical visualization. It provides a number of features for creating beautiful and informative visualizations of data. However, Seaborn does not provide any specific features for anomaly detection or outlier analysis.
Statsmodels is a Python library for statistical modeling. It provides a number of features for working with time series data, such as fitting models and performing hypothesis tests. However, Statsmodels does not provide any specific features for anomaly detection or outlier analysis.
In conclusion, PyOD is the best Python library for anomaly detection and outlier analysis in time series data. It provides a wide range of anomaly detection algorithms and features for outlier analysis.