[مستر وليد السيد]

tie - attach: What is the full difference between them?
Sender MIDORED4 Position Teacher

To tie is “to fasten things together or hold them in a particular position using a piece of string, rope etc.” Please see more here.
To attach is “to fasten or connect one object to another.” Please see more here.
You tie things with a string or rope — which can be untied or cut. You might tie something to another object — such as tie a horse to a fence or tie a lid on a box. Or you fasten something in a position — such as tie a string around your finger or a towel around your waist.
You attach things — connect one object to another — with string, rope, chain, cellotape, glue, nails, screws, etc.

The picture was ______ to the wall and I could not take it off. a. situated b. tied c. attached d. placed
Sender Waleed El_ Sayed Position Teacher The answer is (c) attached.
It would be unusual to tie a picture to a wall -- you would have to have a nail or ring fixed to the wall, and tie the picture to that. And if it were tied, you could just untie it, so there would be no problem with taking it off the wall.
Please see more at this question and answer.