Correct spelling, explanation: incorporate comes from Latin incorporare. The root of this word is corporate (Latin corporare) with the prefix in-. The prefix in- can give two meanings to a word, one of which is in. Therefore, while corporate means to combine into one, incorporate is to introduce sth into an integral body. Encorporate is thus a mistaken form.

Definition of incorporate:
verb, to introduce as an integral part
We are planning to incorporate this project as soon as possible.
Christians incorporate children into the Church by baptizing them.

Incorrect spelling, explanation: encorporate is incorrect because in this case, we will use the prefix in-, which gives the meaning of in. This is also visible in the Latin origin incorporare. Therefore the correct form is incorporate.

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling