Hey there!
The present tense would be swim.
This is because it suggests your swimming in the present, instead of swum or swam, which suggests that you did these 50 laps in the past.
Hope this helps!
Answer:
To provide explanation and analysis of evidence.
Explanation:
A commentary is a detailed explanation from the author's side, the expression of his/her opinions about whatever is being discussed or referred to. In other words, we can say that a commentary is when an author provides an explanation about the events or a situation.
One of the primary reasons why writers use commentaries is to provide explanations and also their analysis of evidence that's been provided or given. This allows the writer a chance to express his/her opinions about that particular point or the point made or argued about in a text.
Thus, the correct answer is the first option.
1. To persist in anything undertaken
2. Maintain a purpose in spite of difficulty
