According to research on the tip-of-the-tongue phenomenon, a. your mental dictionary is arranged in alphabetical order. b. when an item is on the tip of your tongue, you will seldom be able to recover it. c. you can identify similar-sounding words, but you cannot accurately guess the number of syllables in the target word. d. you can typically provide a similar-sounding word, which matches the target word reasonably closely.

I believe the answer is: d. you can typically provide a similar-sounding word, which matches the target word reasonably closely.

tip-of-the-tongue phenomenon refers to the occurrence when a person failed to retrieve a certain word from his/her memory even though the  feeling that retrieval is imminent. When this happen, that person could typically provide a similar-sounding word but somehow still couldn't retrieve the word that he/she intended to retrieve.