2 QUESTIONS IN 1!! What does the word signature mean in the sentence below?

I asked the famous baseball player for his signature.

story
advice
special cap
written name

What does the word plentiful mean in the sentence below?

In the summer, we have many peaches because they are plentiful
on the farm.

very ripe
difficult to find
a common example
available in large amounts

Intelligence tests are often used to predict a person's future ability to perform in a school setting. alfred binet's initial purpose for developing intelligence testing was to aid students in getting the remedial they may have needed in elementary school. which of the following measures is the best criterion for evaluating the predictive validity of intelligence testing? act school attendance school grades sat job placement