That shirt looks _________________ small for a 5 year old.
D
Correct answer
Explanation
The correct phrase is 'rather small' - meaning 'somewhat small' or 'quite small'. This is a standard English collocation where 'rather' modifies the adjective to express degree. Option A would need 'a bit small' to be grammatically correct, 'even small' is not idiomatic, and 'much small' is grammatically incorrect (should be 'much too small').