Aren't the koalas cute.—— Yes __________. A. a kind of B.kind of C.kinds of D.all kinds of

选B
kind of 表示程度，‘有点儿’的意思。非正式用语
used when you are trying to explain or describe something, but you cannot be exact:
例如：It was kind of strange to see him again.
其他三个都是后面要带名词构成词组的，不能单独作用。

b,有点

--Aren't the koalas cute?
-- Yes,__________.
A.a kind of B.kind of C.kinds of D.all kinds of
=They are kind of cute.
kind of= sort of :adv.(infml) in some way or degree; rather:
Feeling sort of ill
I sort of thought you might say that.
" sort of the colour of that wall"

b kind of 有几分