The sentence is missing two words, "will" and "a."
the corrected version would be:
In today’s blog post, I //will// teach you how to make //a// watermelon salad with feta and mint! With less than five ingredients, it’s a feast for the eyes and the palette.
B. because folktale usually has to deal with magical animal or elements.
The expression "her heart was throbbing" implies that her heart was ultimately beating or pounding. It is to beat rapidly or violently. In simpler words, it just means that her heart was beating fast due to an emotional outburst. Hope this answers your question. Have a great day!