Can someone PLEASEEE tell me who is John Climacus?

AnswerJohn Climacus, also known as John of the Ladder, John Scholasticus and John Sinaites, was a 6th-7th-century Christian monk at the monastery on Mount Sinai. He is revered as a saint by the Roman Catholic, Eastern Orthodox and Eastern Catholic churches:

Explanation:

the answer is 250 percent.

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering