The correct answer is a) silkworm becomes a silk-producing larva.
The silkworm caterpillar has built a cocoon and is entirely enclosed inside of it. There, it will eventually cease moving and shed its exoskeleton that resembles a caterpillar's skin to become a pupa, which is the stage that occurs between being a caterpillar and an adult moth.
The cocoon's underside retains the exoskeleton, also known as exuvia. The body of a silkworm pupa has already begun to resemble that of an adult rather than a caterpillar.
It is shorter, segmented, and has a distinct head as well as the first stages of the adult legs. A pupa's transformation into an adult moth takes around two weeks.
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broad topic isn't exactly what you want in a presentation, you usually want to have a very narrowed topic, focusing on something specific.
Detains and examples are very important, so check that. You always need multiple sources.
A cited list is also very important, because it's technically illegal to not have one if you used any info from somewhere else besides your own brain.
D isn't important at all
E could be important for the working progress phase, but for the presentation itself, it's not really needed.
The answer is a country clerk is the answer