Problem: How does the next paragraph end?

How to clean rust off steel 
Use a potato and dish soap on light rust. 
Cut a potato in half with a knife. Drizzle dish soap onto the cut end of the potato.
A: Rub away rust by firmly scouring rusted areas with the soapy potato. This method can be messy; work over a sink or outside for easier cleanup.

Problem: How does the next paragraph end?

How to use a band aid 
Assess whether a bandage is necessary. 
Though you may think every wound needs a bandage, a bandage may actually be unhelpful or even harmful to certain types of wounds. In general, a cut or gash that is not very deep will benefit from a bandage, while other types of wounds will require different treatment approaches.
A: Keeping minor scratches, scrapes, and cuts clean might be sufficient, and you may be able to leave them uncovered. This will allow the wound to remain dry and begin to heal.

Problem: How does the next paragraph end?

How to become a clinical laboratory scientist 
Gain familiarity with the sciences as early as high school. 
Chemistry and biology are particularly important to understand as a lab scientist. If possible, invest time early in your career to cultivating a strong foundation in these subjects.
A: Math is also an important subject to understand. If you truly understand and enjoy these subjects, this might be a good career for you.

Problem: How does the next paragraph end?

How to avoid the health risks of vegetarian diets 
Include a healthy amount of fat in your diet. 
While you shouldn't eat too much, fat is essential for your body to properly absorb vitamin a, vitamin d, and other fat-soluble vitamins and minerals. Without sufficient fat, you may be at risk for vitamin deficiencies.
A:
Fats shouldn't make up more than 30 percent of your diet. Eat more healthy, unsaturated fats that are found in fruit, seeds, and nuts.