Answer:
Is D. having schools for religious study
Explanation:
The city of Timbuktu is known for being a trade center, having gold an salt mines, attracting many scholars, but isn't known for having schools for religious study.
Renaissance<span> began in Italy during the 14th century and reached its height in the 15th. In the 16th and 17th centuries it spread to the rest of </span>Europe<span>.</span>
"The mass of Substance C is five times the mass of Substance B", the given statement is correct.
Answer: Option D
<u>Explanation:</u>
As Jessie added 16 gm. of Substance A to 4 gm. of Substance B Obtained certain amount of Substance C which can be calculated as follows:
amount of Substance C = Substance A + Substance B = 16 + 4 = 20 gm
Therefore, 20 gram of Substance C was obtained. Here, fourth statement is correct which says the mass of Substance C ifs five times the mass of Substance B to justify this, see the below:

I believe the answer is: Recidivism
Recidivism refers to The tendency for criminal to repeat the offense that made them convicted in the first place.
Many experts believe This happen because the prison system in united states do not add enough educational value for the inmates to change their behaviors/way of thinking.