homelessness

yes

1. Many sociologists contend that homelessness is caused by a decrease in wages and in inavailability of affordable housing, a lack of family support, and a decline in health care coverage.

That doesn't sound natural.

2. ... and inavailability of affordable housing, a lack of family support, and a decline in health care coverage.

Neither does 2, above.

3. ... and in the availability of affordable housing, a lack of family support, and a decline in health care coverage.

Number 3 is fine. The availability of housing can be high or low. Common sense tells us that this situation points to a low availability of affordable housing.

4. ... and in the inavailability of affordable housing, a lack of family support, and a decline in health care coverage.

Number 4 is also a possibility, but it's certainly not a necessity.

imo that's a rather awkward sentence structure .

let's try this :

- Many sociologists contend that homelessness is caused by a decrease in wages

- additionally there is often a lack of affordable housing , and a lack of family support

- and there has also been a decline in health care coverage .
..............................................................................................

still awkward . i think the writer was trying to cram too much into one single sentence ... and that often does not give good english .
...............................................................................................

someone else please untangle this .

Many sociologists contend that homelessness is caused by factors as:

- decrease in wages
- unavailability of affordable housing
- lack of family support
- decline in health care coverage.

Tintin, where was this sentence from? Is it exactly like the original?