Which of the following morphemes can cause X-Deletion? A. pel B. cid C. duc D. tend

The question seems to be about linguistics, specifically morphemes and a process called X-Deletion. However, without further context or information about the specific rules of X-Deletion in the language or linguistic system you're referring to, it's impossible to definitively answer which of the given morphemes (pel, cid, duc, tend) can cause X-Deletion.

In general, X-Deletion refers to a process where a certain element (X) is removed in certain linguistic contexts. This process can be influenced by a variety of factors, including the specific morphemes involved, their position in a word, and the phonetic context.

If you could provide more information about the specific rules of X-Deletion you're referring to, I would be able to give a more accurate answer.