Which is the correct definition for an organ? A. The basic unit of structure and function. B. A collection of organ systems that work together to perform the same function. C. A collection of tissues that work together to perform a specific function. D. A collection of cells that work together to perform a similar function.

C A collection of tissues that work together to perform a specific function

Step-by-step explanation:

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )