"Isn't" is the best option from the list in terms of completing these sentence. This is primarily because "isn't" is a contraction of the two words "is" and "not.
The answer is letter D. the object of the sentence.
Since "a frog" is the recipient of the subjects action, it is considered the object of the sentence.
Thank you for posting your question. Feel free to ask me more.
Wasn’t sure if u needed colored ones
Yes, there are good as well as bad forms of self- love. Such as if you cant look in a nearby mirror while talking to someone. That would be a narcissistic form of self-love. However on the flip side, if you have the type of self-love to be confident, this is a positive form of self- love.