Answer:
1. Seals sit on rocks in warmer are by the oceans. 2. Scientists can collect data about currents.
3. We tend to wear hats in sunny climate and in warm temperatures.
Explanation:
The answer is A. your last name and page number
In the letter particularly, last name usually put as an introduction before the initial content of the letter, so it will be better if created with header.
For page that contains page number, the header is created to give a pointer on what the page number means/indicates
The sentence "<em>Bob plays guitar in his spare time"</em> represents a single sentence.
<h3>What is a simple sentence?</h3>
This refers to an independent clause which conveys a single and complete thought.
Hence, the <em>Bob plays guitar in his spare time"</em> represents a single sentence because its conveys a single and complete thought.
Therefore, the Option B is correct.
Read more about simple sentence
<em>brainly.com/question/897886</em>
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