Find out whether there is any grammatical error in below sentence. He fixed a metal ladder / for the wall below his window / so as to be able to / escape if there was a fire.

He fixed a metal ladder
for the wall below his window
so as to be able to
escape if there was a fire E. No error

The correct answer is: E. No error

The sentence is grammatically correct. The word “so as to” is a subordinating conjunction that introduces a clause that expresses purpose. The word “escape” is a verb that is in the infinitive form. The infinitive form of a verb is used after certain subordinating conjunctions, such as “so as to.”

The sentence can be rewritten as follows:

He fixed a metal ladder for the wall below his window so that he could escape if there was a fire.

The sentence is also grammatically correct in this form. However, the original sentence is more concise and easier to read.