Final answer:
UWorld pelvic examination shows an enlarged uterus and a closed cervix. Ultrasound shows a twin intrauterine gestation. This statement is false. Option b is correct.
Step-by-step explanation:
An enlarged uterus with a closed cervix, alongside an ultrasound revealing a twin intrauterine gestation, contradicts the given options.
In the context of a twin pregnancy, uterine enlargement is expected, but a closed cervix typically suggests a stable intrauterine environment. In a normal twin gestation, the cervix may exhibit changes associated with pregnancy progression.
The accurate assessment of this scenario aligns with an open cervix in the context of a twin intrauterine gestation, rendering the statement false. Therefore, option b is correct.