Which transition phrase is best used to introduce an example

For example,

For instance,

As an example,

...such as

One example...

In particular,

e.g.

It all depends on what you are writing about! But there is no "best" phrase, you just have to choose what sounds right in your sentence!

In my opinion Guinea Pigs are the most fragile animals out of all the small prey animals because they can only go without eating or drinking for 24-48 hours. For example, Guinea pigs need a fresh supply of hay and water daily, anything less may lead to starvation causing death.

Explanation:

You see what I did there? I put my transition phrase in bold so you can understand and used a made up opinion about guinea pigs to introduce it.

i really really really really really really dont know

i believe your answer is d)