Final answer:
Poor nucleophiles (H2O, R-OH) prefer addition reactions over other types of reactions.
Step-by-step explanation:
Poor nucleophiles, such as water (H2O) and alcohols (R-OH), prefer addition reactions over other types of reactions. In an addition reaction, the nucleophile adds to the reactant and forms a new compound. This occurs when the electrophilic center in the reactant is more favorable for bonding with the nucleophile than the leaving group. In contrast, nucleophilic substitution, electrophilic substitution, and elimination reactions involve different reaction mechanisms and are favored by different types of nucleophiles.