A scientist uses a submarine to study ocean life. • She begins 163 feet below sea level.
After traveling down for 8 seconds, she's 260 feet below sea level.
Find the rate of change in the submarine's elevation in feet per second. Round your
answer to the nearest tenth.

Option (B) and (E) are discrete sets.

Step-by-step explanation:

Discrete Sets include the countable variable. It can be positive real numbers.

Option (A) is incorrect as it also includes negative values.

Option (B) is correct as it includes all natural numbers not included negative or decimal values.

Option (C) is incorrect as it includes -8 and it is negative.

Option (D) is incorrect as it is not the set, Set has both open and closed braces( {a} ).

Option (E) is correct as both elements are positive and not has decimals or negative values.