Identifying the Major Product from Nucleophilic Substitution and Elimination

Consider the following reaction involving alkyl halides:

2-bromo-2-methylpropane + sodium hydroxide (NaOH) → ?

This reaction can undergo a nucleophilic substitution or an elimination reaction depending on various conditions. Identify the major product of this reaction and explain your reasoning based on the structure of the starting material and the nature of the nucleophile.