Question

Omission I went to church to admire its architecture

Answer 1

I went to THE church to admire it's architecture.

Answer 2

Omission refers to the something which is neglected, missed out or not done.

The above sentence is omitted. The missing word is 'the.'

Hence, it would be written as,

I went to the church to admire its architecture.

The as a definite article is used in front of a noun in order to depict the exact things being talked about. 'The' in the above sentence points out the particular church which is admired for its architecture.