Answer:
A. conforming to social conventions
B. criticism of a middle class lifestyle
E. the necessity of companionship
Step-by-step explanation:
The first alternative is supported by the first part of the passage in which Tolstoy describes all the reasons why Fedorovna seems to be a good match for Ilyich in the eyes of the society and Ivan Ilyitch himself.
The second alternative is an overall conclusion that can be derived from the fact that the passage describes marriage more like a business deal than a derivation of love.
The third alternative is revealed to us by the fact that Ivan Ilyitch knew himself that Fedorovna is not her best match, but decided to still marry her, because he needed to have a partner.