Read these paragraphs from the text. Even after you're fully grown, your brain will continue remaking itself. Scientists know the brain is a work-in-progress.

They know this thanks to high-tech imaging techniques, such as magnetic resonance imagery (MRI) and positron emission tomography (PET). The MRI snaps detailed pictures of the brain. The PET scan reflects brain activity.

Based on this evidence, what can you conclude about the way scientists study the brain?
The way that the brain remakes itself can be studied through high-tech pictures and scans.
The only way that scientists study brains is by using high-tech imaging techniques, since no other techniques are useful.
The most important piece of high-tech imaging that scientists use is the MRI because it is more accurate than the PET.
High-tech imaging techniques only help scientists see if there is any physical damage to the brain.