Penjelasan:

This statement is generally true. If you are not passionate about what you are doing, it is likely that you will not find fulfillment or happiness in your work. However, there may be exceptions where people may not enjoy what they are doing, but they find happiness in other aspects of their life.

This statement is also true. If students do not comprehend a fundamental concept in thermodynamics, they will struggle to apply it to problem-solving, which will impede their ability to excel in that subject.

This statement is plausible. If someone didn't receive help to analyze data, it is possible that they might not have been able to graduate. However, it's also possible that they could have found help from other sources or figured out the analysis themselves.

This statement is a conditional statement, where the outcome depends on the condition being met. If the person was not a friend, then there would be no reason to give them a hand. So, this statement is true under the condition that the person is a friend.