[Solved] When does the embryo/fetus assume a human appearance, kick strongly enough that the mother can detect it, have a heartbeat that can be detected with a stethoscope, and have a hardening skeleton? A)8 weeks B)16 weeks C)20 weeks D)25 weeks Condenser: An apparatus or device used in laboratories or industrial applications for condensing vapors, typically part of a cooling system or used in distillation processes. Optical Microscope: An instrument that uses visible light and lenses to magnify objects, allowing for the observation of small details that cannot be seen by the naked eye. Focus Control: The adjustment or regulation of the clarity and sharpness of an image in photography or optics. Sterilization: The destruction of all microorganisms, including bacterial spores, by specific means.