Diuretics can either provoke or prevent certain ________________ in the body.

Diuretics are medications that promote the excretion of water and salts through urine. This process can lead to various changes in the body, particularly in the hormonal balance.

In terms of hormones, diuretics can influence the secretion and activity of several hormonal systems, such as the kidneys' regulation of hormones like aldosterone and antidiuretic hormone (ADH). For example, certain diuretics can lead to increased potassium excretion, which may in turn affect the secretion of hormones that regulate potassium balance in the body.

Additionally, diuretics can impact fluid balance and blood pressure through hormonal activity, which may either provoke or prevent shifts in these systems. This makes "hormones" the most suitable choice in understanding the effects of diuretics, as their action directly relates to hormonal regulation and balance within the body. Other options like infections, enzymes, and diseases, while they may be associated with diuretics indirectly, do not directly address the primary action of diuretics on the body's hormonal systems.