Answer:
I believe that The word 'Validate' in this sentence would mean to clarify what the first one is saying.
Explanation:
If you get results from the first "experiment" then the second experiment's results will clarify, or prove what the first experiments answer was
An adjective is a words that describes something. since 'old' is describing the picture of the school that is your adjective.
I think its a complex scentence