Answer: Option (c) is the correct answer.
Explanation:
A long hydrocarbon chain that consists a terminal carboxylic group is known as a fatty acid.
An unsaturated fatty acid consists a double bond within the fatty acid chain. If a fatty acid contains more than one double bond then it is known as polyunsaturated fatty acid.
For example, oelic acid has chemical formula 
is an unsaturated fatty acid.
Therefore, we can conclude that option (c) represents an unsaturated fatty acid.
Um, can you be a bit more specific? I'd like to help but Im not really sure what you mean
So?? what?
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Answer:
The ball may be hit above the net and the player's hand hitting the ball may pass to the opponent's side but WITHOUT touching the net.
On the other hand, underneath the net the ball cannot pass, nor can it go to the opponent's court, the bottom of the net is disabled for the game or ball pass.
Explanation:
In volleyball, the net must not be touched, the net must not be dropped and the ball must always pass over it in order for the score to be considered in the game, otherwise, if some of the situations are written, the players will be disqualified. points or they will not be considered
