Correct Answer:
C. اسم مصغر
The question asks for the grammatical category of the word "دیگچی" (degchi). The correct answer is اسم مصغر (Ism-e-Musaggar), which means a diminutive noun. A diminutive noun indicates a smaller size or a lesser degree of the original noun. "دیگچی" is the diminutive form of "دیگ" (deg), meaning a large pot, thus "دیگچی" refers to a small pot.
- اسم مصدر (Ism-e-Masdar) refers to an infinitive noun, which denotes an action or state without specifying tense or subject.
- اسم مکبر (Ism-e-Mukabbar) refers to an augmentative noun, which indicates a larger size or greater degree.
- اسم صوت (Ism-e-Saut) refers to an onomatopoeic noun, which imitates a sound.
Therefore, "دیگچی" correctly falls under the category of a diminutive noun.