Final answer:
Placenta previa is the condition associated with an increased risk of placenta accreta and occurs when the placenta partially or completely covers the cervix due to the embryo implanting near the cervix opening.
The correct option is 1) Placenta previa.
Step-by-step explanation:
The condition associated with elevated lab in placenta accreta is placenta previa. Placenta previa occurs when an embryo implants too close to the opening of the cervix, leading to the placenta partially or completely covering the cervix.
This condition can be a precursor for placenta accreta, a serious pregnancy complication where the placenta grows too deeply into the uterine wall. When placenta previa is present, it can potentially increase the risk of placenta accreta, as well as the more severe forms, placenta increta and placenta per Creta, which occur when the placental tissue invades even deeper into the uterus and possibly beyond.