Alternative splicing means that:
a. some transcripts are spliced correctly and others incorrectly.
b. alternating introns are removed.
c. different spliced forms contain different combinations of exons.
d. some transcripts are spliced while others are not.

c) different spliced forms contain different combinations of exons.

Explanation:

alternative splicing is the process of producing different combination of exons  of the same gene

1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.