Answer:
A. Consider less costly housing options
Step-by-step explanation:
From the description above, we know that he has 'spends a great deal on housing'.
On average, workers in united states spends between 20-30% of their salary for housing. The fact that Jonah 'spends a great deal' on housing indicates that he might use larger than that percentage to cover his housing.
Keep in mind that all of the options above will definitely help Jonah increase his savings. But From those options, choosing less costly housing options would provide the largest monetary benefit for Jonah.