Final answer:
Lice are the parasites that typically occur in regions with tight clothing, thriving on close contact and easily transferring between individuals or from fabric to skin.
Step-by-step explanation:
The parasite that typically occurs in regions with tight clothing is lice. Tight clothing can provide an environment conducive to the spread of lice because these parasites thrive on close contact and can easily transfer from fabric to skin or between people. Unlike other parasites such as mosquitoes that are vectors of malaria, or ticks which are often found in wooded or grassy areas, lice are generally transmitted through direct contact or sharing items like hats or brushes.