Pandas Practice: Selection, Missing Values and Cleaning

Pandas Practice: Selection, Missing Values and Cleaning

Choose one best answer. Each attempt draws 10 of 20 questions; the practice pass mark is 8/10. Pandas 2.2+ selection and data cleaning. Assume import pandas as pd; each question is independent. Original topic practice, not an official exam or score prediction.
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What is pd.to_numeric(pd.Series(['12', 'bad', '7']), errors='coerce').isna().tolist()?