Leaving aside the ERIC database, we now turn to Google and run the following search:

$$Mobile learning$$ effectiveness $\text{'}\text{'}$personalized instruction'$\text{'}$ site: $.$edu

$6$

Which of the following statements is TRUE:

Points: $2$

We should truncate the word effectiveness as effective$*$

The results will all be from American educational institutions and universities

The quotation marks are not useful in Google and shouldn$$t be used

The search is missing AND, OR and NOT Boolean operators