Answer:
I want to say B. he developed OCD at an old age.
Explanation:
im not entirely sure this is correct so please tell me if its not! hope this helps!
less littering or more cleanup <em>let me know if this helpful please</em>
<span>Some kinds of living things undergo sexual reproduction at times when conditions in their environment become less favorable in order to increase genetic diversity, which might confer an adaptive advantage on individual organisms.</span>
What system are we talking about? Context is needed... water cycle, cells, etc?