Answer:
The correct answer is 'If molecules are small enough, then they can pass through the semipermeable membrane because they can cross the semipermeable membrane from their small pores or openings'.
C. Incus The Incus sends sound vibrations to the inner ear.
////// it is biological magnification /////
D
Cos Dna contains deoxyribose, Rna ribose
B, hormones that serve as chemical messengers im not 100% sure though