TIR1, GID1, COI1 and PYL1 are receptors for:
Correct option is A, Auxin, GA, JA, ABA. In Phytohormone ALL problems like this, the accurate statement is Auxin, GA, JA, ABA; the others are common mix-ups. Not these: B) GA, Auxin, CK, ABA; C) Auxin, CK, JA, ABA; D) Auxin, GA, SA, ABA. Tissue transport questions usually turn on xylem vs phloem, living vs dead cells, or source vs sink.
Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.