Final answer:
The conjugation of 'elegir' in the subjunctive form for 'el', 'ella', and 'ud' is 'elija'. This form is derived from the present tense 'yo' form, 'elijo', with specific modifications for the subjunctive mood.
Step-by-step explanation:
The conjugation of elegir in the subjunctive form for the pronouns 'el', 'ella', and 'ud' is 'elija'. When conjugating regular and irregular verbs in the subjunctive mood, you generally take the yo form of the present tense, drop the -o, and add a special subjunctive ending. For 'elegir' this would be yo elijo. However, 'elegir' is an irregular verb so it does not follow the usual pattern exactly and instead becomes elija in the subjunctive form.
Learn more about Subjunctive conjugation