During in active absorption of ions:

Options

A. Carriers are involved for both influx and efflux of ions
B. Immobile carriers with pores pumpions
C. Ions move in outer space against ecp gradients
D. Downhill transport of ions occurs

Answer

### Step-by-Step Solution:

1. **Understanding Active Absorption**: Active absorption of ions refers to the process where mineral ions are absorbed by plant roots against their concentration gradient. This process requires energy, typically in the form of ATP.

2. **Role of Carriers**: In active absorption, carrier proteins are essential. These proteins facilitate the movement of ions into (influx) and out of (efflux) the cells. This means that the first statement, "carriers are involved for both influx and efflux of ions," is correct.

3. **Nature of Carriers**: The second statement mentions "immobile carriers with pores pump ions." This is incorrect because immobile carriers are not typically involved in active transport; they are more associated with facilitated diffusion, which does not require energy.

4. **Direction of Ion Movement**: The third statement suggests that "ions move in outer space against extracellular concentration gradients." This is misleading. In active absorption, ions move from the outer space (soil solution) into the cell, which is against the concentration gradient. Therefore, this statement is also incorrect.

5. **Transport Mechanism**: The fourth statement claims that "downhill transport of ions occurs." This is incorrect as well. Active absorption involves uphill transport, meaning ions are moved from a region of lower concentration to a region of higher concentration, which requires energy.

6. **Conclusion**: Based on the analysis of each statement, the only correct option is the first one: "carriers are involved for both influx and efflux of ions."

### Final Answer:
The correct statement regarding active absorption of ions is: **"Carriers are involved for both influx and efflux of ions."**

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