Answer: The bolded contraction means will not.
Explanation: A contraction is a shortened form of one or two words that are used together. The contraction "won't" is commonly used to mean "will not". Moreover, "won't" is generally found in texts that follow an informal writing style since the academic writing conventions do not allow the use of contractions. On the other hand, the shortened forms of "would not" and "was not" are "wouldn't" and "wasn't", respectively. In these cases, the apostrophe is replacing the missing letter ("o").