Final answer:
A severability clause ensures the validity of the remaining sections of a contract if some parts are deemed unenforceable, and prevents the entire contract from being invalidated due to issues with individual clauses.
Step-by-step explanation:
A severability clause in a contract serves multiple important purposes. Primarily, it acts to Preserve Validity of the remaining provisions of a contract in case one or more clauses are found to be illegal or otherwise unenforceable. Furthermore, it aims to Avoid Entire contract invalidation, ensuring that the rest of the agreement continues to be effective even if part of it is invalidated.
Without a severability clause, there is a risk that a small issue could render the entire contract void. By including this clause, the parties make clear that their intention is for the contract to endure as much as possible, even if adjustments are necessary due to legal challenges to particular parts.