Hello. Although this question refers to the play "The crucuble" you did not inform the point of the play to which you ask these questions, which makes it difficult to answer accurately.
Elizbeth is portrayed as a sick character, which we can see that physically she is very weak and does not have the liveliness that other characters, like Abigail does. This can contribute to the lack of attractiveness between John and her, in addition to contributing to his initiative in looking for a lover. Elizabeth is also portrayed as a cold and emotionless wife at the beginning of the story, but shows a strong loyalty, courage and affection for John throughout the narrative.
The correct answer is a) he thinks it will bring the two families together
