Question

according to the similarity thesis, we are attracted to people who provide ____ of our own choices and beliefs.

Explanation:

The Similarity Thesis (or Similarity Attraction Hypothesis) in psychology and social science states that we are drawn to those who validate our choices and beliefs. The term "validation" (or "confirmation") fits here as such people provide support/affirmation for our own stances.

Answer:

validation (or confirmation, affirmation - terms that fit the context of the Similarity Thesis where others' agreement/affirmation of our choices/beliefs attracts us)