Answer: The correct option is (C) 41.7%.
Step-by-step explanation: Given that Tito bought a baseball card for $24.00 and sold it for $34.00.
We are to find the percent of increase rounded to the nearest tenth.
According to teh given information, we have
Cost price = $24.00
and
Selling price = $34.00.
So, the increase in the rate of baseball card is given by

Therefore, the percent of increase is given by

Thus, the required percent of increase is 41.7%.
Option (C) is CORRECT.