Answer:
C)caffeine is the independent variable
Explanation:
Caffeine is the independent variable and word recall is the dependent variable. Word recall is dependent on the presence or absence of caffeine.
The answer is we dont know
Mostly because of the inexperience of the engineers who had been entrusted with the tasks as most of them were professional lawyers. the length of the canal also cast more shadow of doubt on the undertaking besides the lack of sophisticated equipment for the engineering works.
