Question

the wrong fasteners have been used in joist hanger
the joist hanger is the wrong size and is missing fasteners
the joist hanger is missing fasteners
the joist hanger is too wide
the joist hanger is too tall

Explanation:

Looking at the joist hanger, we can see that not all the required fasteners (nails/screws) are present (some holes are empty), and also, the hanger's size relative to the joist seems incorrect (missing fasteners and wrong size is a common issue here). The other options: "wrong fasteners" – we can't tell fastener type wrong, just missing; "missing fasteners" is part of the second option; "too wide" or "too tall" – the main issue is missing fasteners and wrong size. So the best option is the one stating both wrong size and missing fasteners.

Answer:

The joist hanger is the wrong size and is missing fasteners