Problem: How does the next paragraph end?

A woman is doing a tutorial on how to clean a kitchen sink with baking soda, a toothbrush and cloth rag. she
A: first takes some baking soda on the rag and scrubs it on the sink.

Problem: How does the next paragraph end?

A man is talking in front of a rock climbing wall. he
A: starts climbing the rock climbing wall.

Problem: How does the next paragraph end?

How to prune shrubs 
Thin off any old or dead stems. 
Shrubs that are old or overgrown may need to be pruned over several years. This is called renewal or renovation pruning.
A: Start by using hand shears and lopping shears to remove any old stems on the shrub. Cut them off at a 45 degree angle.

Problem: How does the next paragraph end?

How to deal with obesity in cockatoos 
Change your bird's diet. 
Cockatoos need a diet comprised of 65% to 80% pelleted food and 15% to 30% vegetables. Seeds and fruit should be given in moderation only.
A:
Obesity is often caused by a seed-based diet, so invest in high quality pellets designed for cockatoos instead of providing a seed diet. Make sure your bird is actually eating its pellets.