The breadth of Leonardo's talents is reflected in the extraordinary range
of his output. In the field of art, along with the legendary Mona Lisa,
were the paintings Vitruvian Man and Lady with an Ermine. At the same
time, Leonardo was the first man to conceptualize the bicycle, airplane,
helicopter, parachute, and diving suit. Another interesting fact about

what does this paragraph mean?

he breadth of Leonardo's talents is reflected in the extraordinary range of his output. In the field of art, along with the legendary Mona Lisa, were the paintings Vitruvian Man and Lady with an Ermine. At the same time, Leonardo was the first man to conceptualize the bicycle, airplane, helicopter, parachute, and diving suit.

Explanation:

the pronoun reference replaces a noun, but you have to make sure there's no room for confusion.

in the first sentence "her" could be referring to shely or to the sister. the answer there is "shelly called her sister and told her about the new baby."

in the second sentence "it" could be referring to the roof or the floor. the answer there is "since the roof leaks on the family room floor, we need to repair the roof."