When a spring vibrates, it does so with a steady pattern. The time it takes to complete one cycle of the vibration is known as the of the spring. A amplitude, B frequency, C period, D wavelength

It might be C? I would use this as a back up answer though

lysosomes contain a variety of enzymes, enabling the cell to break down various biomolecules it engulfs, including peptides, nucleic acids, carbohydrates, and lipids (lysosomal lipase). the enzymes responsible for this hydrolysis require an acidic environment for optimal activity. hope i !

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.