What disease is nick suffering from?

Choose thyroid, parathyroid, or the adrenal gland and choose one disease affecting this part of the en-docrine system.

*edit* i took the test and i picked a and it was incorrect for its c! rank the following suggestions for preventing std, in order of increasing effectiveness. 1) using latex condoms properly 2) using spermicidal foam or jelly with a monogamous partner 3) abstaining from sexual intercourse and genital contact a. 1, 2, 3c. 2, 1, 3

During the first month of development, how many layers of cells make up the embryo? a. 1 b. 2 c. 3 d. 4