Question

1. Wilma was able to walk again at age twelve.

2. Wilma was able to walk again at the age of twelve.

3. Wilma was able to walk again at twelve.

4. Wilma was able to walk again aged twelve.

(Which ones are correct? Could we use other expressions?)

Answer 1

The first two are correct.

You could also say, "Wilma was able to walk again when she was twelve years old.