Which of the following is the definition of a topic sentence?

Which of the following is the definition of a thesis statement?

Starting with the first, put the plot points from 'An Inspector Calls' in chronological order. They all refer to Mr. and Mrs. Birling.

In Act 1 of 'An Inspector Calls', which words does Mr. Birling use to describe the idea of social responsibility and those that advocate for it?

In 'An Inspector Calls', which of the following does Mrs. Birling suggest about the father of Eva’s child?

In 'An Inspector Calls', what is a key similarity in Mr. and Mrs. Birling’s attitudes towards social responsibility?