1 : to express sorrow audibly2 : to make a sound suggestive of a mournful cry3 : to express dissatisfaction plaintively
The initial results seemed promising, but the final effects were kind of disappointing.
In the given sentence above, the unnecessary qualifier that needs to be removed is "kind of". It is an informal expression which is usually used as meaningless fillers. So, the final sentence will be:
The initial results seemed promising, but the final effects were disappointing.
Hello!
Here the correct answer would be D.
Hope this helps!
Lizzy)