6496. The food we had to eat was incompatible to our needs.

✅ The correct answer is option D.
Harmonising : make consistent or compatible.

According : as stated by or in.

Corresponding : analogous or equivalent in character, form, or function; comparable.

Unsuitable : not fitting or appropriate.

Incompatible : (of two people) unable to live together harmoniously.

Synonym of Incompatible is Unsuitable