Question

A blastocyst is a

A. Cluster of cells surrounding a developing egg in the uterus

B. Membrane that surrounds and protects a growing embryo in the uterus

C. Growth that conform in the wall of the Fallopian tubes

D. Hollow ball of cells formed after a fertilized cell undergo cell division

Answer 1

A. Cluster of cells surrounding a developing egg in the uterus

Step-by-step explanation: