Hi. These are carboxylic acids, not aldehydes (but it doesn't matter). You're asked to provide the splitting pattern and integration (coupling pattern), draw the peaks. (The easy way do get there is to use any software [or webpage], draw the structure and 'predict' the NMR!) Four coupling - at this stage, only worry about the n+1 rule. What pattern would a single, isolated proton have? What about two protons next to three protons? And vice versa: three protons next to two protons? Then, consider chemical shifts; which protons would be most deshielded?