intelligence tests measure?

a.specific mental abilities
b.knowledge
c.general perception
d.mental alertness
my answer is a

5 answers

I don't agree. what specific mental abilities would they measure?
do you think c .general perception is the right answer
in my text it says:
intelligence and aptitude tests attempt to measure the individuals mental abilities in certain areas,verbal reasoning,numerical ability,space relation,abstract reasoning,mechanical reasoning and perception are the main categories.
sorry it should be knowledge
Now you have it.