Concept:The correct expression should be a standard quantifier phrase that is grammatically complete and idiomatic.
Explanation:"Many" must be followed by a plural noun, so "many kind" and "many kind of" are incorrect because "kind" is singular.
"Some kind" is incomplete because "of" is needed to connect it to the noun that follows.
"Some kind of" is the proper phrase, meaning an unspecified type of something.
For example: "She bought some kind of fruit."
This fits naturally before a singular countable noun.
Therefore, the only correct and complete option is "some kind of."
Answer:C. some kind of