It's the Ninth Inning, and the Bases Are Loaded

It's the ninth inning, and the bases are loaded. As the pitcher winds up to throw the ball, how does each tissue in his arm contribute to this critical pitch? The ___________ of his fingers grips the ball. His __________ sends instructions that trigger his ___________ to contract. His ______________ provides stability and transmits the force produced.

A) ectoderm; ectoderm; mesoderm; endoderm
B) connective tissue; nerve tissue; muscle tissue; epithelial tissue
C) epithelium; ectoderm; mesoderm; endoderm
D) epithelial tissue; nerve tissue; muscle tissue; connective tissue