A solution having higher solute concentration than the cell is called:
Correct option is C, Hypertonic. In BASICS of PLANT problems like this, the accurate statement is Hypertonic; the others are common mix-ups. Not these: A) Hypotonic; B) Isotonic; D) Iso-osmotic. 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.