Since you have the luxuryLuxury? Yes, a luxury because, on a lab practicum, your instructor will expect you to figure out the primary tissue type on your own.
of already knowing this is connective tissue, examine the cells (d, for example) in the tiny spaces (a), surrounded by the heterogeneous-looking matrix (c) that consists bundles of pink-staining fibers (b) in the gelatenous matrix (c).
Once you have classified the tissue, you should be able to identify the cell type (d) that is responsible for producing and maintainng the matrix (c).