Assuming that the sentence follows the phrase structure rules given below, decide whether the sentence is a kernel sentence or a transform. S NP + VP. NP (DET) N VP V (NP) John played his flute. __
A) Kernal sentance
B) Tansform sentance
PLEASE Decide ASAP

I believe this is a A. kernel sentence.
Kernel sentences are the most basic sentences in English language, meaning they are usually quite short, have a subject and a predicate, are active, indicative, and declarative.
The sentence <em>John played his flute </em>fits those descriptions. It has NP (John) + VP (played his flute). NP consists of one N (John), and VP consists of a V (played) and NP (his flute).