Answer: The given statement is true.
Step-by-step explanation:
When a person wants to achieve higher grades then it is only possible if the person studies with dedication and puts his best efforts in order to achieve its goal.
For example, a student scored 90% in his academics because he studied very hard day and night.
Whereas when a person only wishes to achieve good grades but doesn't do hard work to achieve it then he cannot score higher grades.
Therefore, we can conclude that the statement if earning higher grades is important to you, you are likely to study more, is true.