The answer is Its.
Theirs/their pertains to more than one person belonging to items.
It's is a contraction form of "it is".
I think it might be C
could i get brainlyest if it's right
Answer:
D.It is
Explanation:
The word 'it's' is a homophone for the possessive pronoun 'its. ' Notice that one has an apostrophe and the other doesn't.
Both inventions were done by teenagers at their times.
Both inventions claimed to help the environment: Boyan Slat's machine would clean up trash floating in ocean. Duro-Aina Adebola, Akindele Abiola, Faleke Oluwatoyin, and Bello Eniola proposed power generation from urine that would not create carbon monoxide.
Unfortunately both inventions were also challenged by more established scientists and engineers.
