Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to study for biology [title] Have a positive attitude towards biology. [step] Biology can be complicated, but it is also very interesting if you take a step back to think about what you're studying. Having the right attitude can make it more fun to study.

Ending1: [substeps] Don't put on a look to make people laugh. It might be tempting to act flirty and bubbly, but this is not for everyone. Ending2: It can make studying much easier, can give you an incentive to do better. If you are feeling anxious about chemistry, for example, take a step back and count your breaths. Ending3: It will still be difficult, but if you're interested in what you're learning, it won't feel like such a burden. [substeps] It can be helpful to connect biological concepts to real-world situations. Ending4: Instead of making it hard to get into the right mindset, it lets you be yourself and generally matters. This is especially important in harder subjects, like chemistry or calculus.

Answer format: ending1/ending2/ending3/ending4