Which type of diabetes is known to occur during pregnancy?

Gestational diabetes is specifically defined as diabetes that develops during pregnancy, typically after the 24th week. This condition occurs due to hormonal changes that lead to insulin resistance in the body. While both Type 1 and Type 2 diabetes can exist prior to or persist after pregnancy, they are not linked to pregnancy itself. Pre-diabetes refers to a condition where blood sugar levels are elevated but not high enough to be classified as diabetes, and it can occur outside of pregnancy. Therefore, gestational diabetes is the only choice that directly relates to the context of pregnancy, making it the correct answer. Understanding gestational diabetes is vital as it can affect both the mother and the baby, necessitating monitoring and management to ensure healthy outcomes.