Dulcia wondered how her marriage to Carlos could be successful when they couldn’t even see eye to eye on the little things. Why was he making such a fuss over red velvet wedding cake rather than chocolate? Why was it so important that their china pattern was French country instead of American contemporary? She shook her head, wishing she had known beforehand what a particular man her fiancé was.

Questions
What is meant by the idiom “see eye to eye” in this text?

See each other

Agree on things

Be the same height

Kiss each other

What does Dulcia wish she had known beforehand about Carlos?

She wishes she had known what a particular man her fiancé was.

What is meant by the idiom “see eye to eye” in this text?

See each other

Agree on things

Be the same height

Kiss each other

In this text, the idiom "see eye to eye" means to agree on things.