1. which statement most accurately describes the process of respiration?
select one:
a. it occurs only in plants during the daylight hours and usually involves the exchange of gases.
b. it occurs only in plants during the daylight hours and involves the taking in of preformed organic molecules.
c. it occurs continuously in the cells of all organisms and involves the synthesis of carbohydrate molecules.
d. it occurs continuously in the cells of all organisms and often involves an exchange of gases.

for me i have felt invisible when i was clearly struggling,or,i made a great achievement ,and,nobody took to notice me either because they just didn't see it,or,people just turned their back on me.i can see a person being invisible by choice,or,without choice like i did.the people who are invisible by choice don't try to talk to people,don't try to make friends,and,keep to themselves.i haven't been one of those people so i couldn't give you a reason.

hope this and can i get bainliest my dude : d

all the above is what i would say