Answer:
cause them to become frustrated.
you can increase your productivity. avoid becoming confused. cause them to become frustrated. concentrate on your job.
It's OK. U could write in more detail about what a photographer is and the definition
The likely connotation of the underlined words might be <em>Nwoye is depressed at the news of Ikemefuna’s death, but he accepts all the custom of his clan.</em>
We can assume this because it seems that although he is sad because of the death, he felt inside like he has to deal with it and carry on, owing to the fact that are traditions that he has to respect. This can be considered as a metaphor when is using the tightened bow.
As you get data from experiments so you get knowledge from research