...1 sprite with 100 images or 100 sprites with 1 image? ive heard that its better to use sprites with single image.
Any performance difference by putting all your object images into a single sprite is probably small. Your frame-rate will be limited by other factors.
And consider the hassle of having every object in the IDE show the same image (the first image in the sprite). Plus, you'd have to put image_index = whatever in the CREATE event of every instance. Or specify it in the DRAW event.
bleh... why make your life miserable?
EDIT: I just read your last post. Sure, there may be a convenience having your fruit images all in the same sprite. Like a form of parenting. And it's easy to switch between apples and grapefruit (say).
But I'd limit this to objects that are essentially the same. Not
all objects, as your first post implied. In other words, make the decision based on
convenience.